COOPERATIVE EXTENSION WO RK IN AGRICULTURE AN D HOME ECON OM ICS

S TATE OF FLORIDA

Veget able Crop Specialists COLLECt. OF AG RICUL TUUE .

UN IVERSITY O F' FLORIO A. AND

UNI TED STA TES Ot:PART M ENT OF

AGRICULTURE . COOPERATING

VEG ETA IA

JANUARY, 1964

TO: County Agents, Associates and Assistants

No. 62

WHEN TO PLANT CARROTS

IN TIIIS ISSUE

1. t-rnen to Plant Carrots 2. Tomato Handling 3. Sweet Corn Husk Tri.nnning 4. Pesticides

a. PEBC (Tillam) on again b .. Poly:.am - Hhat is it?

5. No~e~ of Interest

AGRICU L TURAL EXTENSION sc nv1cc

COUN TY AGENT AN O

HOME 0E.MOl-4STH A. rfON WCRI<

GAINCSVIL.1.. £ , FL O RI DA

Three years of planting date research at S,mford by Dr. Forbes and Dr. Scudder has shown that on old celery land the best yields with several varieties have resulted from plantings made in October and early November.

TOI~~TO HANDLING (Reports from Florida State Horticultural Society)

Mature green Homestead tomatoes from four packing houses in Dade County, Florida, were evaluated for exte r nal and internal bruising by Hatton and Reeder. They fcund most external bruising occurred during harvesting, hauling and dumping onto the grader. Most of these fruit were removed by sorters. Internal bruising increased during the har­vesting and packing process. This study indicated internal bruising found in the market may result from injuries incurred during transp orta­tion and handling at wholesale and retail rather than during harvesting and packing.

A study on the effect of temperature after ripening on quality con­ducted by c. B. Hall showed that ripened fruit of Manapal, Marion, Home• stead 24, and Step l~30 stored at 50°, 59°, or 68°F. for three weeks in­creased in color during the first week and decreased during the third week. Rate of color developm2nt being greatest between 50° c:nd 59°, and more placental brealcdoun at 68° than at 59° or 500f. A small increase occurred with time in storage.

-2-

Another study by Segall, Hayslip and Walter indicato?d a variation in rate of ripening and susceptibility to cold injury was found among the varieties . u. n.. Grothen, Homestead and Marion r ipened more rapidly than Indian River , Hanapal , Step 410 and L~30. This difference remain ed whether fruit were held in storage for ten days at 55° anci 40°F. The rapid ripening varieties had less alternaria stem end decay than the others when held at 70°F. following ten-day exposure to 40°F.

SHEET CORN m.JSK 'IRil-lHil TG

Work by R. K. Showalter indicates marked effects from removing portions of sha:i.k and husk at harvest. Ears with long shanks decreased 3% in weight and kernels dented severely in two days. Four days were required for 8% weight loss and moderate kernel denting with short shanks. Hovement of water from kernels to husk was highest where the shank was not trimmed.

PESTICIDES

Chlo r dane tolerances on 47 fruit and vo?getable crops has heen re­duced from 0. 3 ppm to o.o ppm (zero) by FDA. This will influence our r ecommendation of chlordane on vegetables ,-,here there is a possibi ­lity of having residue s , part ic ularly on ro ot crops .

Endri n ~~ be used le ga lly on broccoli, brussels spr outs, ca b-bage, and caulitlower since label clearance was withdrawn on November 15, 1963. Gr owers should be informed of this to prevent trouble with res idues .

Fumazone - Nemagon - The nematocide sold unde r the foregoing trade name~ has recently been given labels for twenty vegetable cro ps . Ci1eck the sepa rate sheet for specific information.

PEBC (Tillam) - on again - We have heard that Tillam may now be used on field seeded toma~oes agai n. The manufacturer has reinstated the chemical fo r use on tomatoes on a limi ted ba sis by area .

Polyram - Hhat is it? - This i s a new fun gic ide which looks good for late and early blight on potatoes . It is a p,olyethylene polymer containing 3 parts lethylenebis ~thiocarbamatgj] zinc to l part \]U.­thiobis (thioczrbonyl) iminoethylel!ii bis ~thiocarbamat~ zinc.

NOTES OP INTEREST

Several hundred acres of Sout hern Peas produced for pr ocessing west Florida were r endered unmarketable becau se of cowpea curculio . should not happen because thr ee or fou r applications of toxephene as recommended in 193C gives excellent control.

in This

COOPERATIVE EXTENSION WORK IN

AGRICUl TURE AND HOME ECONOMICS

COllEGE Of AGRIOJLTURE, UNIV:CP.SHY Of FlORIDA, UNITED STATES DEP.:..i!iM~NT OF AGRIOJlllJRi:,

STATE OF FlORIDA AGRICJlnJRl\l EXTENSION SERVICE, COUNiY AGRl<.llLlURAl HOME OEMQNSTRAIION, ANO 4,H CLUB WORlt

AND OOARCS OF cou:~rr COt,\Mls:; IONCRS. COvl'ERATING

Gaine svi ll e December 30, 1963

TO: All County Agents and Ass istant County Agents

SUBJECT: Tolerances, dosages , and li mitations of DBCP.

Until relatively recen t ly tolerances , dosages, and limitations

have not been established for chemicals used as nematocides . These

are now being issued for some nema.tocides . The attached pages give

th e new uses of 1,2 - dibro mo- 3- chloropropane + other halo genated c3

compounds (DBCP) which have been accepted for re gist ra ti on on cer tain

ple.nts under the Federal Insect ici de, Funeic i de, and Rodenticide Act .

These acc eptances are base d on res earch data and ar e not to be con-

strue d as recommendati ons by the Pesticide Regulations Division, USDA.

DBCP is sold under the tra de names of Furna.zone and Nemagon.

RSM/prv

500

Sincerely yours,

Jl1~/J~ R. S. Mullin Plant Patholo gis t

1 ,2 - dibrorno - 3-chloropropane + other halogenated c3 compounds Fumazone

Type Pesticide : Insecticide -Nematocide

Formulations accepted: 71% E.C. c•.:ntain ing 8.6 lbs ./gal . ; 86"/o E.C. contai ning 12 lbs . /gal.

Date Issued : November 15, 1963

Summary pages 201 c,a , e, (etc . )

-------------l--------------------------------------------------------------USE 'TOLERANCE I D08AGE 'LIMITATICNS AND/OR DIRECTIONS

-------------'----··----'----------··----'------------------------------------PPM ' lbs. ac tu al/ A. 1

THIS'IS THE FIRST SUMivIARY ENTRY FOR THIS CHEMICAL.

Apricots

Bananas

Beans (Snap)

5

125 I (75 in

pulp)

75

Blackberries ' 25

34 - 86

17 - 52

17

17 - 24

26

Preplanting, at time of planting, or post -planting applicati on to mineral soils . If preplanting applicat.i on is made, wait 4-6 weeks before planting ,

Preplanting or at time of planting application in rows on mineral soils.

Post planting irrigation treatment not more than once in eac h 9-12 month period after initial appli ­cation .

Preplanting, at time of planting . or post-ple.nting application to mineral soils . If' preplanting application is made, wait 7-14 days before planting . Do not feed plant parts from treated areas to dairy animals or animals being finished for slaughter .

Przp l anting, at time of planting, or post planting application to mineral soils. If preplanting application is made, wait 7-14 days befo r e planting . Do not apply with ­in 48 days of harvest

Fumazone Conti nue d page 2

--------------------------------------------------------------------------USE I TOLERANCE t DOGAGE LIMITATIONS AND/ OR DIRECTIONS

-------------'---------·---------------·----------------------------------

Boysenbe rrie s'

Broccoli

Brussels Sprou t s

Cabbage

Cantal oupes

Car ro ts

Caul if'lower

Cele ry

PPM 'lbs. actual/ A . '

25 26

50 17 - 24

50 17 - 24

50 17 - 24

50 17 - 22

75 17 - 24

50 17 - 24

75 60 '(Plan t beds) t

Celery continued on

Preplanti ng , at time of pla.'1.ting, or post planting appli cation to mineral soils. If preplanting appli catio n is macle > wa t t 7-14 days before pl anting . Do not apply within 48 days of harvest .

Preplanting, at ti me of plan t ing, or post -plantin g applicatio n to mineral soils. I f prepla.nting appl ic ati on is made, wai t 7-14 days before pl anting .

Preplanti ng, at ti me of pl anting, or post-planting application to mineral soils . If pre pl.anting appllt:at..i. on is made:; Wl:l.it 7-14 days be fo re pl anting .

Preplanting ; at ti me of planting , or post --plantin g appli cation to mineral soils . If preplanting appl ic ati on is made, wai t 7-14 days before plan ti ng .

Preplanting , at tim e of pl anting, or post -p lant i ng applicatio n to mineral soils . I f' pre pl ant ing appl ication is made, wait 7-14 days before plan t ing .

Prep lan ting, at time of planting, or post -pl anting applicat io n t o mineral soils . If prep lant ing application is made, wait 7-14 days be fore plan ti ng.

Preplanting , at t ime of plan ting, or post -planting application to mineral so il s. If preplanting appli ca tion is made , wait 7-14 da:ys before plan t ine .

Preplanting, or post -planting drench in plant beds . If pr epl anting appli­cation is made, wait 7-14 days before see ding .

page 3

Fumazone Contin ue d page 3

----------------------------------------------------------------··-----------USE 'TOLERANCE' DOSAGE LIMITATIONS AND/OR DIRECTIONS _____________ , _________ , _______________ ) ____________________________________ _

PPM ' lbs . ac tu al/ A.'

Celery cont .

Cotton 25 '(in see d )'

Cucumbers

Dewber!'ies

Eggplants

Endive (Es carole) '

Figs

Grapes

25

25

50

130

75

25

17 - 24 (field )

12 - 26

17 - 26

26

17 - 24

17 - 24

34 - 86

Preplanting, at time of planting, or post-planting applica tion to mineral soils . If pre plan t ing applica ti on is made , wait 7-14 days be fo re planti ng .

Preplanting or post-planting appli­cation to mi neral soils . If pre ­planting appl ica tio n is me.de, wai t 7-14 days befo r e pla nt ing.

Preplanting, at time of planting, or post -planting applic at io n to mineral soils . If preplanting application is made , wait 7-14 nays before planting.

Preplan tin g, at time of planting, or post -planting appl i cat ion to mineral soils . If pre planting appl ication is made, wait 7-14 days befo r e planting. Do not apply within 48 days of harvest .

Prepla.nting, at time of planting, or post-planting application to mine ral soils . If preplanting applicat ion is made , wait 7-14 days bef ore planting .

Preplant ing, at ti me o-f plant.i .ng, or post -planting applic ation to mineral soils . If pr epl anti ng application is made ; wait 7-14 days before planting .

Preplan t i .ng., a t time of plant i ng, or post -planting applic ation to miner al soils . If preplan t ing appli cation is made , wait 4-6 weeks before pl ant ing .

Preplanting., at time of plan.ting, or post - pl anting applicati on to mineral soils. If pre plan ti ng application is made, wait 4-6

11 weeks before planting.

Fumazone Contj_nued page 4

USE 'TOlliRANCE' DOSAGE ' Lil illA TI ONS AND/ OR DIRECTIONS I I I --------··------------------------------------------------------------------

Hone~' Dew Melons

Let tu ce

Loganberrie s '

Muskmelons

Nectarine

Okra

Parsnips

Peaches

PPM 50

l30

25

50

5

75

75

5

, lbs . r:.c-'cual/ A . ,

17 - 26

l7 - 24

26

17 - 26

31} - 86

17 - 24

31~ - 86

Preplanting, at time of planting) or pos t-planting applicatio n to miner al soils . If pre pla nting application is made, wait 7-14 days before planting •

Preplanting) at time of planting, or post - plan~ing appl i~ation to mineral so ils. If pre planting application is made) vait 7-14 days before plant i ng •

Preplanting , at time of plan t ing, or po st -planting application to mine ral soils . I f prep lan ting applica t i on is made; wait 7-14 days before planting . Do not apply with i n 48 days of harv es t .

Preplanting, at ti me or planting , or post- planting application to miner al soils . If pre pl anting application is made; wai t 7-14 days before plant in:, .

Preplan ting 7 at ti me of planting, or post - planting application to mineral soils . If pr eplan ti ng applica tion is made, wait l~-6 weeks before planting .

Preplanting, at ti me of planting, or post - planting applica tio n to miner al soi l s . If pre pl anting application is made; wai t 7-14 days before planting .

Preplanting, at time of plan ti ng, or pos t -planting application to mineral soi ls. If pre pla nt in i=:, application is made7 wait 7-14 days before plan ti ng .

Preplanting, at t i me of planting, or post -planting application to mineral soils . I f preplanting application is made, wait 4-6 weeks before planting .

Fumazone Continued po.ge 5

----··--------.1.---------------- ··-----------------------------··---··-----··----USE 'TOLERAJ.~CE' DOSAGE LIMITATIONS AJ.\'])/ OR DIRECTIONS

-------------·---------' ---------------·------------------------------------

Pineapples

Radishes

Raspberries

Squash (Summer)

Strawberries '

Tomatoes

Walnuts

PPM 'lbs . act ual/A . •

50

75 17 - 24

25 26

25 17 - 26

10 26

50 13

10 34 - 86

Preplanting or at time of planting row applicatio n to miner al soi l s . Inject into so i l to a dept ~ of 5-8 inches and at least 6 inc hes to one side of plant line .

or Post-pla."'lting row a:-pplic at ion with i r r i gation, us in g 0 , 1 inch of wate r. Do not apply wi t hin 9 rnoi.rc'hs of har vest .

Preplanting, at time of planting, or post -planting applica ti on to mineral soils . If prepla nting application is maae, wait 7-14 days befo r e planting .

Preplan t ing, at t ii:le of plantin g , or pos t -planti ng app4ica t ion to miner al $Oils . If preplant i ng applica t ion is maae, wa.it 7-14 cieys before pl an t ing . Do not apply within 48 days of harvest .

Pre plan t ing, at time of planting, or post -planti ng ap9lica t ion t o miner al so i ls . If preplanting application is made2 wait 7-14 days before planting .

Preplanting, at time of planting, or post-plnnting o.pplication to mineral so i ls . If preplanting application is made, wait 7-14 days be f ore plan t ing .

Preplanting, at time of planting, or post -planti ng applica ti on to mineral soils . ff prep l ~nting appli ca t ion is made., wai t 7-14 days before pla11ting .

Preplanting , at time of planting, or post -plant i ng application to mineral soils . I f preplant i ng applica ti on is made, wait 4-6 weeks before pl antin g .