CONTROL OF WEEDS IN CORN (FIELD AND SWEET ... CONTROL OF WEEDS IN CORN (FIELD AND SWEET) TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4 …

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CONTROL OF WEEDS IN CORN (FIELD AND SWEET)

PROSO MILLET CONTROL IN LIBERTY LINK SWEET CORN ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98B1A CROP: CORN, SWEET (GH 0943). PLANTED: 98/05/27, 60000 PL/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/26 AT 224 KG/HA PROD WITH 14-21-24 PREV CROPS: PEA, PROCESSING (97), CORN, SWEET (96), CORN, SWEET (95). FIELD EXPT. EXPT DESIGN: RANDOMIZED COMPLETE BLOCK. REPS: 4. PLOT SIZE: 2 X 8M. PLOT AREA: 16 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (GH 0943) EMERGED ON: 98/06/05. SITE DESCRIPTION: ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET PROSO PROSO T | GROWTH ST INFO# CORN CORN MILLET MILLET R | | INCORP INFO# RATE % GH 094 GH 094 T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK (WEEDY) 0C 0C 0E 0C 2 1 1 F METOLACHLOR 2.64 93.5EC 0C 0C 0E 0C F BENOXACOR 3EC 3 1 1 F CGA 77102 2.16 40EC 0C 3C 0E 0C F ATRAZINE 32EC F BENOXACOR 2EC 4 1 1 PENDIMETHALIN 1.68 40EC 0C 0C 3DE 0C 5 1 1 T PENDIMETHALIN 1.68 40EC 1C 0C 3DE 3C 1 1 T ATRAZINE 1.53 90WG 6 1 1 T PENDIMETHALIN 1.68 40EC 0C 0C 8DE 0C 1 1 T CYANAZINE 2.25 90WG 7 2 2 T RIMSULFURON 0.015 25WG 1C 0C 18D 21B 2 2 T AGRAL 90 0.2 SU 8 3 3 T DPX 79406 0.025 25WG 3C 0C 64AB 61A 3 3 T AGRAL 90 0.2 SU 9 4 4 T NICOSULFURON 0.025 75WG 4C 0C 50BC 55A T AGRAL 90 0.2 SU10 2 2 GLYPHOSATE 0.9 36SN 23B 26B 5DE 0C 11 2 2 GLYPHOSATE 0.9 36SN 100A 100A 71A 21B 4 4 GLYPHOSATE 0.9 36SN12 2 2 GLUFOSINATE AMM 0.3 20SN 0C 0C 35C 28B 13 2 2 GLUFOSINATE AMM 0.3 20SN 0C 0C 70A 65A 4 4 GLUFOSINATE AMM 0.3 20SN 11.4LSD 14.6LSD 15.4LSD 16.8LSD 5% 5% 5% 5% 8.00SE 10.2SE 10.8SE 11.7SE 78.4CV 103 CV 43.0CV 60.2CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 16 16 16 16 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980714 980806 980806 980901 LEAF RANGE 6 -7 5 -10 5 -6 4 -9 HEIGHT (CM) 61-78 72-110 72-104 93-153 PLANT DENSITY (PL/SQ.M) 706 673 -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; ATRAZINE -CGC; BENOXACOR -CGC; CGA 77102 -CGC; CYANAZINE -CGC; DPX 79406 -DUQ; GLUFOSINATE AMMONIUM -CAX; GLYPHOSATE -MOL; METOLACHLOR -CGC; NICOSULFURON (DPX V9360) -DUQ; PENDIMETHALIN -CYC; RIMSULFURON (DPX-E-9636) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 17. 59 3 98/05/27 2035 4 4.2 5.2 34 16 2 200 241 POST-E CO2 SPRAYER 0.5 27 87 5 98/06/16 0900 12 7 16 14 16 3 200 241 POST-E CO2 SPRAYER 0.5 25 72 .5 98/06/24 0815 7 16 43 6 16 4 200 241 POST-E CO2 SPRAYER 0.5 19 75 5 98/07/02 0845 16 43 0 5 21------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (GH 0943) | PROSO MILLET | 2 SWEET CORN (GH 0943) 3 3 3 13 17 15 | PROSO MILLET 3 4 4 2 4 3 257 | 3 SWEET CORN (GH 0943) 3 5 4 21 35 27 | PROSO MILLET 3 5 4 9 23 17 246 | 4 SWEET CORN (GH 0943) 4 6 5 32 43 40 | PROSO MILLET 4 6 5 23 38 29 338 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THIS TRIAL WAS CONDUCTED IN GLUFOSINATE TOLERANT SWEET CORN. THERE WAS NO INJURY IN SWEET CORN WITH THE EXCEPTION OF GLYPHOSATE TREATMENTS. METOLACHLOR/BENOXACOR, CGA 77102/ATRAZINE/BENOXACOR, PENDIMETHALIN, PENDIMETHALIN PLUS ATRAZINE, AND PENDIMETHALIN PLUS CYANAZINE ALL HAD NO ACTIVITY ON PROSO MILLET IN THIS TRIAL. THE POOR PERFORMANCE OF THESE PREEMERGENCE APPLICATIONS CAN BE ATTRIBUTED TO LACK OF RAINFALL TO ACTIVATE THE HERBICIDES AND THE EXTREMELY HEAVY PRESSURE OF PROSO MILLET. NICOSULFURON/RIMSULFURON AND NICOSULFURON PROVIDED BETTER CONTROL THAN RIMSULFURON. THIS MAY BE PARTLY DUE TO THE LATER APPLICATION. THE SEQUENTIAL APPLICATIONS OF GLYPHOSATE AND GLUFOSINATE BOTH PROVIDED REASONABLE CONTROL OF PROSO MILLET. (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1A CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. OTHER ASSESSMENT #1 REFERS TO TOTAL WEIGHT HARVESTED. OTHER ASSESSMENT #2 REFERS TO MARKETABLE WEIGHT. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR T | | | KG/HA CONC VISUAL VISUAL VISUAL HEIGHT OTHER OTHER # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 (CM) ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 53 3.98 2.18 2 1 1 ISOXAFLUTOLE 0.105 75WG 0 0 0 52 3.99 2.07 3 1 1 ISOXAFLUTOLE 0.21 75WG 0 0 0 53 4.18 2.48 NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE 0 CV 0 CV 0 CV 14.3CV 18.1CV 47.4CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980605 980610 980622 980622 980821 980821 LEAF RANGE 4 -5 5 -5 6 -8 6 -8 HEIGHT (CM) 15-19 17-24 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE MAIN EFFECTS OF ISOXAFLUTOLE ACROSS ALL 11 HYBRIDS ARE PRESENTED IN THE TABLE ABOVE. THE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN SWEET CORN EVALUATED 14, 19, AND 31 DAYS AFTER EMERGENCE. IN ADDITION, THE APPLICATION OF ISOXAFLUTOLE DID NOT HAVE AN EFFECT ON HEIGHT, TOTAL YIELD, AND MARKETABLE YIELD OF SWEET CORN. THERE WAS NO INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES. THE SIMPLE EFFECTS OF THE HERBICIDE ON EACH SWEET CORN VARIETY ARE PRESENTED IN THE NEXT SIX SUMMARIES. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1B CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 0 0 0 0 0 0 0 0 2 1 1 ISOXAFLUTOLE 0.105 75WG 0 0 0 0 1 0 0 1 0 1 0 3 1 1 ISOXAFLUTOLE 0.21 75WG 1 0 0 0 1 0 0 0 0 0 0 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980605 980605 980605 980605 980605 980605 980605 980605 980605 980605 980605 LEAF RANGE 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 HEIGHT (CM) 15-19 15-19 15-19 15-19 15-19 15-19 15-19 15-19 15-19 15-19 15-19 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN THE 11 SWEET CORN VARIETIES EVALUATED 14 DAYS AFTER EMERGENCE. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1C CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 0 0 0 0 0 0 0 0 2 1 1 ISOXAFLUTOLE 0.105 75WG 0 0 0 0 0 0 0 0 0 0 0 3 1 1 ISOXAFLUTOLE 0.21 75WG 0 0 0 0 0 0 0 0 0 0 0 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980610 980610 980610 980610 980610 980610 980610 980610 980610 980610 980610 LEAF RANGE 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 5 -5 HEIGHT (CM) 17-24 17-24 17-24 17-24 17-24 17-24 17-24 17-24 17-24 17-24 17-24 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN THE 11 SWEET CORN VARIETIES EVALUATED 19 DAYS AFTER EMERGENCE. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1D CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 0 0 0 0 0 0 0 0 2 1 1 ISOXAFLUTOLE 0.105 75WG 0 0 0 0 0 0 0 0 0 0 0 3 1 1 ISOXAFLUTOLE 0.21 75WG 0 0 0 0 0 0 0 0 0 0 0 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 LEAF RANGE 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 HEIGHT (CM) 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN THE 11 SWEET CORN VARIETIES EVALUATED 31 DAYS AFTER EMERGENCE. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1E CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT # V V V MIX MANAGEMENT (AI) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 49 50 45 59 48 52 57 57 55 58 57 2 1 1 ISOXAFLUTOLE 0.105 75WG 45 49 46 58 50 55 51 53 53 58 55 3 1 1 ISOXAFLUTOLE 0.21 75WG 49 49 43 65 49 54 52 58 55 59 55 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV 8.7 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 LEAF RANGE 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 HEIGHT (CM) 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT HAVE A SIGNIFICANT EFFECT ON THE HEIGHT OF THE 11 SWEET CORN VARIETIES EVALUATED 31 DAYS AFTER EMERGENCE. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

149


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1F CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 3.8 4.7 1.4 4.3 4.6 3.2 4.8 3.1 4.5 4.8 4.7 2 1 1 ISOXAFLUTOLE 0.105 75WG 4.0 4.3 1.8 3.9 4.8 3.2 4.7 3.5 4.3 5.3 4.1 3 1 1 ISOXAFLUTOLE 0.21 75WG 4.3 4.7 1.8 4.7 5.0 3.7 4.5 3.5 5.0 5.1 3.9 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV 22 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT EFFECTS ON THE TOTAL YIELD OF THE 11 SWEET CORN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

150


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO ISOXAFLUTOLE APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T1G CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO ISOXAFLUTOLE APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K.KING REVEIL RIVAL T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 2.1 2.5 0.9 2.3 2.2 1.7 3.6 1.3 2.9 2.4 2.2 2 1 1 ISOXAFLUTOLE 0.105 75WG 2.5 2.2 0.9 2.2 2.0 1.4 3.6 1.4 2.5 2.7 1.4 3 1 1 ISOXAFLUTOLE 0.21 75WG 2.8 2.6 1.0 3.0 2.7 2.3 3.5 1.7 3.1 3.0 1.7 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV 41 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------ISOXAFLUTOLE (EXP 31130A) -RPC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0845 0 4 4.2 40 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF ISOXAFLUTOLE DID NOT RESULT IN SIGNIFICANT EFFECTS ON THE MARKETABLE YIELD OF THE 11 SWEET CORN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T1B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

151


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2A CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. OTHER ASSESSMENT #1 REFERS TO TOTAL YIELD. OTHER ASSESSMENT #2 REFERS TO MARKETABLE YIELD. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR T | | | KG/HA CONC VISUAL VISUAL VISUAL HEIGHT OTHER OTHER # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 (CM) ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0 0 69 4.3 2.1 2 1 1 PENDIMETHALIN 1.68 40EC 0A 0 0 72 4.3 2.2 3 1 1 PENDIMETHALIN 3.36 40EC 1B 0 0 71 4.4 2.2 0 LSD NFS NFS NFS NFS NFS 5% SE SE SE SE SE SE 292 CV 0 CV 0 CV 14.2CV 14.2CV 48 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980605 980610 980622 980626 980821 980821 LEAF RANGE 4 -5 4 -5 6 -8 6 -8 HEIGHT (CM) 14-17 16-20 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE MAIN EFFECTS OF PENDIMETHALIN ACROSS ALL 11 HYBRIDS ARE PRESENTED IN THE TABLE ABOVE. THE APPLICATION OF PENDIMETHALIN DID NOT RESULT IN COMMERCIALLY SIGNIFICANT VISUAL CROP INJURY IN SWEET CORN EVALUATED 14, 19, AND 31 DAYS AFTER EMERGENCE. IN ADDITION, THE APPLICATION OF PENDIMETHALIN DID NOT HAVE AN EFFECT ON HEIGHT, TOTAL YIELD, AND MARKETABLE YIELD OF SWEET CORN. THERE WAS AN INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES FOR THE FIRST VISUAL CROP INJURY RATING. THERE WAS NO INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES FOR THE REMAINING ASSESSMENTS MADE. THE SIMPLE EFFECTS OF THE HERBICIDE ON EACH SWEET CORN VARIETY ARE PRESENTED IN THE NEXT SIX SUMMARIES. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

152


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2B CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 PENDIMETHALIN 1.68 40EC 0A 0A 0A 1A 0A 0A 1A 0A 0A 0A 0A 3 1 1 PENDIMETHALIN 3.36 40EC 1A 1A 0A 5B 1A 0A 0A 0A 0A 0A 1A 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV 292 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980605 980605 980605 980605 980605 980605 980605 980605 980605 980605 980605 LEAF RANGE 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 HEIGHT (CM) 14-17 14-17 14-17 14-17 14-17 14-17 14-17 14-17 14-17 14-17 14-17 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF PENDIMETHALIN RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN CUPOLA SWEET CORN EVALUATED 14 DAYS AFTER APPLICATION. THE LEVEL OF INJURY WAS 5% AT THE 2X RATE WHICH WOULD BE COMMERCIALLY ACCEPTABLE. THERE WAS NO SIGNIFICANT INJURY IN THE REMAINING 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

153


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2C CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 0 0 0 0 0 0 0 0 2 1 1 PENDIMETHALIN 1.68 40EC 0 0 0 1 0 0 1 0 0 0 0 3 1 1 PENDIMETHALIN 3.36 40EC 0 0 0 3 0 0 0 0 0 0 1 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980610 980610 980610 980610 980610 980610 980610 980610 980610 980610 980610 LEAF RANGE 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 4 -5 HEIGHT (CM) 16-20 16-20 16-20 16-20 16-20 16-20 16-20 16-20 16-20 16-20 16-20 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF PENDIMETHALIN DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN THE 11 SWEET CORN VARIETIES EVALUATED 19 DAYS AFTER APPLICATION. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

154


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2D CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0 0 0 0 0 0 0 0 0 0 0 2 1 1 PENDIMETHALIN 1.68 40EC 0 0 0 0 0 0 0 0 0 0 0 3 1 1 PENDIMETHALIN 3.36 40EC 0 0 0 0 0 0 0 0 0 0 0 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV 0 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 LEAF RANGE 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 HEIGHT (CM) 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF PENDIMETHALIN DID NOT RESULT IN SIGNIFICANT VISUAL CROP INJURY IN THE 11 SWEET CORN VARIETIES EVALUATED 31 DAYS AFTER APPLICATION. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

155


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2E CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC HEIGHT VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) (CM) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 64 62 63 64 79 58 73 72 78 77 69 2 1 1 PENDIMETHALIN 1.68 40EC 66 68 69 71 77 70 73 73 79 75 70 3 1 1 PENDIMETHALIN 3.36 40EC 62 64 70 68 78 68 77 72 81 73 66 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV 10.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980626 980626 980626 980626 980626 980626 980626 980626 980626 980626 980626 LEAF RANGE 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 6 -8 HEIGHT (CM) 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 46-63 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF PENDIMETHALIN DID NOT HAVE A SIGNIFICANT EFFECT ON THE HEIGHT OF THE 11 SWEET CORN VARIETIES EVALUATED 36 DAYS AFTER APPLICATION. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

156


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2F CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. OTHER ASSESSMENT REFERS TO TOTAL YIELD. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 4.2 4.6 2.0 5.8 4.6 4.7 4.7 3.9 4.7 3.8 4.6 2 1 1 PENDIMETHALIN 1.68 40EC 4.4 4.6 1.7 5.8 4.2 4.4 4.4 3.8 4.9 3.9 5.1 3 1 1 PENDIMETHALIN 3.36 40EC 4.1 4.7 3 5.3 4.4 4.3 4.5 3.6 5.6 4.0 4.6 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV 17.1CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGE APPLICATION OF PENDIMETHALIN DID NOT RESULT SIGNIFICANT EFFECTS ON THE TOTAL YIELD OF THE 11 SWEET CORN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

157


TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PENDIMETHALIN APPLIED PREEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T2G CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PENDIMETHALIN APPLIED PREEMERGENCE. OTHER ASSESSMENT REFERS TO MARKETABLE YIELD. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 2.8 2.5 1.1 2.5 2.3 2.2 2.6 1.8 2.7 0.8 1.7 2 1 1 PENDIMETHALIN 1.68 40EC 3.0 2.8 1.0 3.2 2.1 2.2 2.2 1.9 2.7 1.5 1.8 3 1 1 PENDIMETHALIN 3.36 40EC 2.7 2.6 1.8 1.9 1.8 2.1 2.2 2.0 2.9 1.8 2.0 NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV 35.6CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------PENDIMETHALIN -CYC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 PE CO2 SPRAYER 0.5 16 79 14 98/05/21 0900 0 4 4.2 41 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE PREEMERGENCE APPLICATION OF PENDIMETHALIN DID NOT RESULT IN ANY SIGNIFICANT EFFECTS ON THE MARKETABLE YIELD OF THE 11 SWEET CORN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T2B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3A CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. OTHER ASSESSMENT #1 REFERS TO TOTAL WEIGHT HARVESTED. OTHER ASSESSMENT #2 REFERS TO MARKETABLE WEIGHT HARVESTED. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR T | | | KG/HA CONC VISUAL VISUAL VISUAL HEIGHT OTHER OTHER # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 (CM) ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 109B 4.2 2.2 2 1 1 T PRIMISULFURON 0.025 75WG 8B 9B 9B 96A 4.3 2.4 T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 10B 10B 9B 96A 4.1 2.3 T AGSURF 0.4 SU 2 LSD 1 LSD 0 LSD 7 LSD NFS NFS 5% 5% 5% 5% SE SE SE SE SE SE 61.1CV 36.3CV 14.5CV 13.3CV 26.9CV 48.9CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980616 980622 980706 980707 980821 980821 LEAF RANGE 5 -6 6 -9 9 -10 9 -10 HEIGHT (CM) 24-27 48-58 93-114 93-114 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE MAIN EFFECTS OF PRIMISULFURON ACROSS ALL 11 HYBRIDS ARE PRESENTED IN THE TABLE ABOVE. THE APPLICATION OF PRIMISULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN SWEET CORN EVALUATED 7, 13, AND 27 DAYS AFTER APPLICATION. IN ADDITION, THE APPLICATION OF PRIMISULFURON RESULTED IN A DECREASE IN THE HEIGHT OF SWEET CORN. THE APPLICATION OF PRIMISULFURON DID NOT HAVE A SIGNIFICANT EFFECT ON YIELD WHEN AVERAGED ACROSS THE 11 SWEET CORN VARIETIES. THERE WAS A SIGNIFICANT INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES. THE SIMPLE EFFECTS OF THE HERBICIDE ON EACH SWEET CORN VARIETY ARE PRESENTED IN THE NEXT SIX SUMMARIES. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3B CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PRIMISULFURON 0.025 75WG 0A 1A 0A 4A 70B 0A 4A 0A 0A 1A 8B T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 0A 3A 0A 11B 74B 2A 10B 1A 0A 1A 7B T AGSURF 0.4 SU 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 4 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV 54.1CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980616 980616 980616 980616 980616 980616 980616 980616 980616 980616 980616 LEAF RANGE 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 HEIGHT (CM) 24-27 24-27 24-27 24-27 24-27 24-27 24-27 24-27 24-27 24-27 24-27 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN CUPOLA, DELMONTE 2038, GH 0943, AND SUPER SWEET JUBILEE SWEET CORN EVALUATED 7 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 7 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3C CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PRIMISULFURON 0.025 75WG 0A 0A 0A 4B 88B 0A 2A 0A 0A 0A 2AB T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 0A 1A 1A 7B 91B 0A 6B 0A 0A 0A 4B T AGSURF 0.4 SU 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 3 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV 32.4CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 980622 LEAF RANGE 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 6 -9 HEIGHT (CM) 48-58 48-58 48-58 48-58 48-58 48-58 48-58 48-58 48-58 48-58 48-58 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN CUPOLA, DELMONTE 2038, GH 0943, AND SUPER SWEET JUBILEE SWEET CORN EVALUATED 13 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 7 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3D CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PRIMISULFURON 0.025 75WG 0A 0A 0A 0A 100C 0A 0A 0A 0A 0A 0A T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 0A 0A 0A 0A 98B 0A 0A 0A 0A 0A 0A T AGSURF 0.4 SU 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV 14.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980706 980706 980706 980706 980706 980706 980706 980706 980706 980706 980706 LEAF RANGE 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 HEIGHT (CM) 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 27 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3E CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT # V V V MIX MANAGEMENT (AI) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 101A 109A 111A 106A 102B 111A 112A 113A 117A 111A 104A 2 1 1 T PRIMISULFURON 0.025 75WG 96A 105A 108A 102A 0A 102A 105A 117A 114A 105A 105A T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 99A 106A 106A 104A 0A 109A 108A 113A 109A 105A 100A T AGSURF 0.4 SU 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 10 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV 7 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980707 980707 980707 980707 980707 980707 980707 980707 980707 980707 980707 LEAF RANGE 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 9 -10 HEIGHT (CM) 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 93-114 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN A SIGNIFICANT DECREASE IN HEIGHT OF DELMONTE 2038 SWEET CORN EVALUATED 30 DAYS AFTER APPLICATION. NO SIGNIFICANT DECREASE IN HEIGHT WAS OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3F CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. OTHER ASSESSMENT REFERS TO TOTAL WEIGHT HARVESTED. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 4.2A 4.2A 2.1A 5.4A 3.3B 4.9A 4.8A 3.9A 4.7A 4.2A 5.0A 2 1 1 T PRIMISULFURON 0.025 75WG 4.3A 4.8A 2.5A 7.2B 0A 5.6A 4.5A 4.2A 5.1A 4.1A 5.1A T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 3.8A 5.2A 2.9A 6.7B 0A 4.9A 3.9A 4.0A 4.8A 4.1A 4.6A T AGSURF 0.4 SU 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV 17.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN A SIGNIFICANT DECREASE IN TOTAL YIELD IN DELMONTE 2038 SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PRIMISULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T3G CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, SWEET (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(BONUS BT, CALICO BELLE, CNS 710, CUPOLA BT, DELMONTE 2038, ELITE, GH 0943 BT, GH 2690, REVEILLE, RIVAL, AND SUPER SWEET JUBILEE BT) TO PRIMISULFURON APPLIED POSTEMERGENCE. OTHER ASSESSMENT REFERS TO MARKETABLE YIELD. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 CUPOLA DEL 20 ELITE GH 094 GH 269 REVEIL RIVAL JUBILE T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 3.2 2.2 1.4 2.3 1.6 2.7 2.6 2 2.2 1.6 2.5 2 1 1 T PRIMISULFURON 0.025 75WG 2.7 2.8 1.8 3.2 0 3.8 2.4 3 2.6 1.7 2.3 T AGSURF 0.2 SU 3 1 1 T PRIMISULFURON 0.05 75WG 2.7 2.9 1.7 3.6 0 3.1 2.3 2.6 2.5 1.4 2.1 T AGSURF 0.4 SU NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS NFS SE SE SE SE SE SE SE SE SE SE SE 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV 34.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; PRIMISULFURON (CGA-136872) -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 30 30 5 98/06/09 0945 0.6 12 7 21 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 5 20 20 20 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PRIMISULFURON RESULTED IN A DECREASE IN THE MARKETABLE YIELD OF DELMONTE 2038 SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER TEN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T3B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4A CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. OTHER ASSESSMENT #1 REFERS TO TOTAL WEIGHT HARVESTED. OTHER ASSESSMENT #2 REFERS MARKETABLE WEIGHT HARVESTED. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR T | | | KG/HA CONC VISUAL VISUAL VISUAL HEIGHT OTHER OTHER # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 (CM) ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 133B 4.7 3.7 2 1 1 T PROSULFURON 0.01 75WG 8B 8B 9B 115A 4.2 3.3 T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 9B 9B 9B 113A 4.3 3.4 T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 1 LSD 1 LSD 0 LSD 8 LSD NFS NFS 5% 5% 5% 5% SE SE SE SE SE SE 19.7CV 28.7CV 16 CV 13.5CV 24.4CV 39.1CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980623 980630 980715 980715 980821 980821 LEAF RANGE 5 -6 6 -7 8 -10 8 -10 HEIGHT (CM) 33-44 69-74 122-140 122-140 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE MAIN EFFECTS OF PROSULFURON PLUS ATRAZINE ACROSS ALL 11 HYBRIDS ARE PRESENTED IN THE TABLE ABOVE. THE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN SWEET CORN EVALUATED 8, 15, AND 30 DAYS AFTER APPLICATION. IN ADDITION THE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN A DECREASE IN HEIGHT OF SWEET CORN. THE APPLICATION OF PROSULFURON PLUS ATRAZINE DID NOT HAVE A SIGNIFICANT EFFECT ON YIELD WHEN AVERAGED ACROSS THE 11 SWEET CORN VARIETIES. THERE WAS A SIGNIFICANT INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES. THE SIMPLE EFFECTS OF THE HERBICIDE ON EACH SWEET CORN VARIETY ARE PRESENTED IN THE NEXT SIX SUMMARIES. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4B CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PROSULFURON 0.01 75WG 0A 0A 0A 0A 0A 0A 0A 86B 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 0A 0A 0A 0A 0A 0A 0A 94C 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV 17.9CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980623 980623 980623 980623 980623 980623 980623 980623 980623 980623 980623 LEAF RANGE 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 5 -6 HEIGHT (CM) 33-44 33-44 33-44 33-44 33-44 33-44 33-44 33-44 33-44 33-44 33-44 GROWTH STAGE E.FOLI PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 8 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER TEN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4C CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PROSULFURON 0.01 75WG 0A 0A 0A 0A 0A 0A 0A 92B 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 0A 0A 0A 0A 0A 0A 0A 100C 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 2 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV 28.3CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980630 980630 980630 980630 980630 980630 980630 980630 980630 980630 980630 LEAF RANGE 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 6 -7 HEIGHT (CM) 69-74 69-74 69-74 69-74 69-74 69-74 69-74 69-74 69-74 69-74 69-74 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 15 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER TEN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4D CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T PROSULFURON 0.01 75WG 0A 0A 0A 0A 0A 0A 0A 95B 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 0A 0A 0A 0A 0A 0A 0A 100C 0A 0A 0A T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 1 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV 16 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 LEAF RANGE 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 HEIGHT (CM) 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 30 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4E CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT # V V V MIX MANAGEMENT (AI) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 127A 128A 127A 136A 139B 133A 130A 139B 140B 134A 131B 2 1 1 T PROSULFURON 0.01 75WG 128A 132A 122A 130A 131AB 130A 126A 0A 124A 124A 117A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 122A 122A 125A 129A 121A 124A 118A 0A 127A 128A 122AB T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 12 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV 6.8 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 LEAF RANGE 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 8 -10 HEIGHT (CM) 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 122-140 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN A SIGNIFICANT DECREASE IN HEIGHT OF ELIMINATOR, DELMONTE 2038, REVEILLE, AND DELECTABLE SWEET CORN EVALUATED 30 DAYS AFTER APPLICATION. NO SIGNIFICANT DECREASE IN HEIGHT WAS OBSERVED IN THE OTHER 7 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4F CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. OTHER ASSESSMENT REFERS TO TOTAL WEIGHT HARVESTED. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 4.8A 4.9A 4.0A 6.3A 4.5A 4.8A 4.2A 6.6B 4.1A 3.8A 3.2A 2 1 1 T PROSULFURON 0.01 75WG 3.7A 4.5A 4.2A 5.9A 4.7A 5.0A 5.7B 0.3A 4.4A 4.2A 3.5A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 3.6A 5.3A 4.3A 5.7A 4.7A 4.4A 6B 0A 5A 4.1A 3.6A T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 1.2 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV 29.8CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN A SIGNIFICANT DECREASE IN TOTAL YIELD OF DELMONTE 2038 SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO PROSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T4G CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS(CHALLENGER, CNS 710, CORNUCOPIA, FTF 243, ELIMINATOR, GH 2690, KRISPY KING, DELMONTE 2038, REVEILLE, REWARD, AND DELECTABLE) TO PROSULFURON PLUS ATRAZINE APPLIED POSTEMERGENCE. OTHER ASSESSMENT REFERS TO MARKETABLE YIELD. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % CHALLE CNS 71 CORNUC FTF 24 ELIMIN GH 269 K.KING DEL 20 REVEIL REWARD DELECT T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 3.9A 3.8A 3.1A 4.8A 4.1A 3.8A 3.1A 6.0B 2.6A 2.4A 2.9A 2 1 1 T PROSULFURON 0.01 75WG 2.7A 3.4A 3.2A 4.6A 3.8A 3.9A 5B 0.2A 3.7A 2.8A 2.6A T ATRAZINE 0.5 90WG T AGSURF 0.2 SU T PYRIDATE 3 1 1 T PROSULFURON 0.02 75WG 2.9A 4.2A 3.6A 4.8A 4.1A 3.5A 5.1B 0A 4A 2.7A 2.9A T ATRAZINE 0.5 90WG T AGSURF 0.4 SU T PYRIDATE 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 1.5 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV 30.6CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGSURF -CGC; ATRAZINE -CGC; PROSULFURON (CGA-152005) -CGC; PYRIDATE -CGC; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0810 12 0.6 7 15 16.------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 4 5 4 14 18 18 |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF PROSULFURON PLUS ATRAZINE RESULTED IN A SIGNIFICANT DECREASE IN THE MARKETABLE YIELD OF DELMONTE 2038 SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER TEN VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T4B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5A CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. OTHER ASSESSMENT 1 REFERS TO TOTAL WEIGHT. OTHER ASSESSMENT 2 REFERS TO MARKETABLE WEIGHT. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR 11 VAR T | | | KG/HA CONC VISUAL VISUAL VISUAL HEIGHT OTHER OTHER # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 (CM) ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 149B 3.85 2.07 2 1 1 T NICOSULFURON 0.025 75WG 2B 6B 7B 132A 3.89 2.31 T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 3C 7B 8B 133A 3.58 1.94 T AGRAL 90 0.4 90SU 1.0 LSD 1.4 LSD 2.1 LSD 12.2LSD NFS NFS 5% 5% 5% 5% SE SE SE SE SE SE 116 CV 64 CV 79 CV 16.9CV 33.9CV 81.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 DATE ASSESSED (YYMMDD) 980623 980630 980715 980715 980821 980821 LEAF RANGE 5 -7 7 -8 9 -12 9 -12 HEIGHT (CM) 57-67 83-95 132-159 132-159 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE MAIN EFFECTS OF NICOSULFURON ACROSS ALL 11 HYBRIDS ARE PRESENTED IN THE TABLE ABOVE. THE APPLICATION OF NICOSULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN SWEET CORN EVALUATED 7, 14, AND 28 DAYS AFTER APPLICATION. IN ADDITION, THE APPLICATION OF NICOSULFURON RESULTED IN A DECREASE IN THE HEIGHT OF SWEET CORN. THE APPLICATION OF NICOSULFURON DID NOT HAVE A SIGNIFICANT EFFECT ON YIELD WHEN AVERAGED ACROSS THE 11 SWEET CORN VARIETIES. THERE WAS A SIGNIFICANT INTERACTION BETWEEN THE HERBICIDE TREATMENTS AND THE 11 SWEET CORN VARIETIES. THE SIMPLE EFFECTS OF THE HERBICIDE ON EACH SWEET CORN VARIETY ARE PRESENTED IN THE NEXT SIX SUMMARIES. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5B CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. OTHER ASSESSMENT 1 REFERS TO TOTAL WEIGHT. OTHER ASSESSMENT 2 REFERS TO MARKETABLE WEIGHT. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T NICOSULFURON 0.025 75WG 0A 0A 0A 22B 0A 0A 0A 0A 0A 0A 0A T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 0A 0A 1A 33C 1A 1A 0A 0A 0A 0A 0A T AGRAL 90 0.4 90SU 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 3.5 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV 144 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980623 980623 980623 980623 980623 980623 980623 980623 980623 980623 980623 LEAF RANGE 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 5 -7 HEIGHT (CM) 57-67 57-67 57-67 57-67 57-67 57-67 57-67 57-67 57-67 57-67 57-67 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 7 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5C CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T NICOSULFURON 0.025 75WG 0A 0A 0A 63B 0A 0A 0A 0A 0A 0A 0A T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 0A 0A 0A 76C 0A 0A 0A 0A 0A 0A 0A T AGRAL 90 0.4 90SU 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 3.9 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV 65.7CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980630 980630 980630 980630 980630 980630 980630 980630 980630 980630 980630 LEAF RANGE 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 7 -8 HEIGHT (CM) 82-95 82-95 82-95 82-95 82-95 82-95 82-95 82-95 82-95 82-95 82-95 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 14 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5D CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL VISUAL # V V V MIX MANAGEMENT (AI) 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 0-100 ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 0A 2 1 1 T NICOSULFURON 0.025 75WG 0A 0A 0A 78B 0A 0A 0A 0A 0A 0A 0A T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 0A 0A 0A 89C 0A 0A 0A 0A 0A 0A 0A T AGRAL 90 0.4 90SU 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 6.3 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV 88.9CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 LEAF RANGE 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 HEIGHT (CM) 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN SIGNIFICANT VISUAL CROP INJURY IN DELMONTE 2038 SWEET CORN EVALUATED 28 DAYS AFTER APPLICATION. THERE WAS NO SIGNIFICANT INJURY OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5E CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT HEIGHT # V V V MIX MANAGEMENT (AI) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) (CM) ------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 131A 152A 149B 155B 138A 152B 159A 148A 153A 152A 145A 2 1 1 T NICOSULFURON 0.025 75WG 129A 150A 128A 9A 141A 147AB 157A 146A 154A 144A 144A T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 128A 156A 139AB 0A 140A 136A 160A 151A 159A 154A 146A T AGRAL 90 0.4 90SU 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 13.5LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV 6.9 CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) 6 6 6 6 6 6 6 6 6 6 6 NUMBER OF SAMPLES 1 1 1 1 1 1 1 1 1 1 1 DATE ASSESSED (YYMMDD) 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 980715 LEAF RANGE 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 9 -12 HEIGHT (CM) 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 132-159 GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN A SIGNIFICANT DECREASE IN HEIGHT IN CNS 710, DELMONTE 2038, AND GH 1703 SWEET CORN EVALUATED 30 DAYS AFTER APPLICATION. NO SIGNIFICANT DECREASE IN HEIGHT WAS OBSERVED IN THE OTHER 8 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5F CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 3.3A 5.7A 1.6A 5.0B 3.5A 3.1A 4.0A 3.1A 3.5A 5.3A 4.3A 2 1 1 T NICOSULFURON 0.025 75WG 3.7A 6.6A 2.5A 0A 4.9B 3.5A 4.9A 4.0A 3.8A 5.1A 3.9A T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 3.1A 6.4A 2.5A 0A 4.2AB 3.1A 4.2A 3.3A 3.9A 5.1A 3.7A T AGRAL 90 0.4 90SU .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD .99 LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV 18.5CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN A SIGNIFICANT DECREASE IN TOTAL YIELD OF DELMONTE 2038 SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER 10 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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TOLERANCE OF ELEVEN SWEET CORN HYBRIDS TO NICOSULFURON APPLIED POSTEMERGENCE ECW/EDI-2.4SIKKEMA P H, COWAN A T EXPERIMENT ID: SC98T5G CROP: CORN, SWEET (11 VARIETI). PLANTED: 98/05/16, 50000 SE/HA, 5 CM DEEP, 75 CM ROW WIDTH. PLANTING METHOD: PRECISION PLANTER. FERT BROADCAST ON 98/05/15 AT 360 KG/HA PROD WITH 39-0 -9 PREV CROPS: WHEAT, WINTER (97), CORN, SWEET (96), RUTABAGA (95). FIELD EXPT. EXPT DESIGN: SPLIT PLOT. REPS: 4. PLOT SIZE: .75 X 8M. PLOT AREA: 6 SQ M. CROP ZONE: 999. EXPT LOCATION: EXETER, ON. WEATHER STN: CENTRALIA A, ON. ACTUAL PPT(MM): APR: 37.8, MAY: 43.2, JUN: 36.4, JUL: 49.4, AUG: 118, SEP: 30.2.ACTUAL TEMP(C): APR: 7.7, MAY: 17, JUN: 19, JUL: 21, AUG: 21, SEP: 18. CORN, FIELD (11 VARIETI) EMERGED ON: 98/05/22. SITE DESCRIPTION: SOIL TEXTURE: LOAM. %OM: 3, %SAND: 47, %SILT: 34, %CLAY: 19, SOIL PH: 8. MATERIALS AND METHODS: THIS EXPERIMENT WAS MAINTAINED WEED FREE TO EVALUATE THE TOLERANCE OF 11 SWEET CORN HYBRIDS (BONUS BT, CALICO BELLE, CNS 710, DELMONTE 2038, ELITE, GH 1703, GH 2690, GSS 7831, KRISPY KING, REVEILLE, AND RIVAL) TO NICOSULFURON APPLIED POSTEMERGENCE. ------------------------------------------------------------------------------------------------------------------------------------ APPL INFO# SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET SWEET T | GROWTH ST INFO# CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN CORN R | | INCORP INFO# RATE % BONUS CALICO CNS 71 DEL 20 ELITE GH 170 GH 269 GSS 78 K. KIN REVEIL RIVAL T | | | KG/HA CONC OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER OTHER # V V V MIX MANAGEMENT (AI) ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS ASSESS------------------------------------------------------------------------------------------------------------------------------------ 1 1 1 CHECK,UNTREATED 1.7A 4.3A 0.8A 3.3B 1.0A 0.9A 2.1A 1.1A 2.0A 3.3A 2.3B 2 1 1 T NICOSULFURON 0.025 75WG 2.4A 5.4A 1.4A 0A 3.3B 1.6A 3.1A 2.1A 2.1A 2.8A 1.2AB T AGRAL 90 0.2 90SU 3 1 1 T NICOSULFURON 0.05 75WG 1.6A 5.2A 1.1A 0A 2.8B 0.8A 2.7A 1.1A 2.6A 2.4A 1.1A T AGRAL 90 0.4 90SU 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 1.16LSD 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% SE SE SE SE SE SE SE SE SE SE SE 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV 37.4CV ------------------------------------------------------------------------------------------------------------------------------------ SAMPLE SIZE (SQ.M) NUMBER OF SAMPLES DATE ASSESSED (YYMMDD) 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 980821 LEAF RANGE HEIGHT (CM) GROWTH STAGE PLANT DENSITY (PL/SQ.M) -----------------------------------------------------------------------------------------------------------------------------------AGRAL 90 -CHP; NICOSULFURON (DPX V9360) -DUQ; ------------------------------------------------------------------------------------------------------------------------------------ APPLICATION INFORMATIONAPPL SOL VOL TOT SPR PRES APPLICATION HT TEMP HUMID WIND RAINFALL (MM/WK) 1ST SIG. RAININFO# L/HA L/HA KPA TIMING METHOD M C % KM/HR DATE TIME BEFORE AFTER SECOND DAYS MM------------------------------------------------------------------------------------------------------------------------------------ 1 200 241 POST-E CO2 SPRAYER 0.5 20 71 5 98/06/15 0845 12 0.6 7 15 16------------------------------------------------------------------------------------------------------------------------------------GROWTH GROWTH STAGE INFORMATION | INCORPORATION INFORMATIONSTAGE BBCH ZADOKS LEAF HEIGHT (CM) GROWTH DENS | INCORP DEPINFO# PLANT (VARIETY) MN MX MN MX MN MX MJ MN MX MJ STAGE PL/M2 | INFO# DATE TYPE CM------------------------------------------------------------------------------------------------------------------------------------ 1 SWEET CORN (11 VARI) 5 6 5 25 28 27 E.FOLI |------------------------------------------------------------------------------------------------------------------------------------ CONCLUSIONS: THE POSTEMERGENCE APPLICATION OF NICOSULFURON RESULTED IN A SIGNIFICANT DECREASE IN MARKETABLE YIELD FOR DELMONTE 2038 AND RIVAL SWEET CORN. NO DECREASE IN YIELD WAS OBSERVED IN THE OTHER 9 VARIETIES EVALUATED. (SEE ALSO EXPERIMENT ID:SC98T5B). (COLLEGE OF AGRICULTURAL TECHNOLOGY, RIDGETOWN).

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