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Cotton Insect Pest Control Issues
Jeff Gore
Cotton Insect Pest Control Issues
Gore
Impact of Planting Date and Varietal Maturity
3744
40
50
60
70
Early
Perc
ent Y
ield
Los
s
22 21
0
10
20
30
40
Mid-April Early-May
Perc
ent Y
ield
Los
s
Planting Date
3 3 3 4
Impact of Planting Date and Varietal Maturity
3844
56Late
23
May Mid-May Late-May
Planting Date
6 7 6 6
Impact of N Rate on TPB Management
2000
2500
3000
3500
Lb. S
eed
cotto
n/ac
re
Number of Plant Bug Sprays
34
0
500
1000
1500
2000
0 40
Lb. S
eed
cotto
n/ac
re
Nitrogen Application
3
Impact of N Rate on TPB ManagementNumber of Plant Bug Sprays
4
55
80 120 160Nitrogen Application Rate
5
Other Factors that Impact Earliness
• Seeding Rate
• Thrips Management
• Disease Management• Disease Management
• Weed Management
• PGR’s
Other Factors that Impact Earliness
Insecticide Application Timings
Neonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsOP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
Regional TPB TrialAll Locations - Season Total
80.0
100.0
120.0
No.
Nym
phs
A
B BC BCD B-E B-
35%
0.0
20.0
40.0
60.0
No.
Nym
phs
B-E B--E C-F
64%
-E C-F D-G E-H F-H GHH
56789
Untreated Insecticide Alone
Impact of Adjuvants5
Row
Ft
012345
Acephate (0.75 lb) Centric (2.0 fl oz)
# / 5
Row
Ft
Plots sprayed 2.5 to 3 hours before 1.1
Insecticide Alone Insecticide + Adjuvant
Adjuvants on Rainfastness
Centric (2.0 fl oz) Transform (1.5 oz)
Plots sprayed 2.5 to 3 hours before 1.1 inces of rain.
Large Block Evaluation of Diamond
15
20
25
No.
/ 5
Ft.
**
*
0
5
10
1 2 3
No.
/ 5
Ft.
*
Weeks After Application
Split growers fields (4 total), Diamond applied approx. 3
Large Block Evaluation of Diamond - 2010
**
4 5 6
**
Weeks After Application
Split growers fields (4 total), Diamond applied approx. 3rd week of squaring
Large Block Evaluation of Diamond
1321
1424
12961300
1400
1500
1600
1700
Lbs
Lint
/ A
cre
+128 lb
+173 lb
1148
900
1000
1100
1200
1300
Washington1 Washington2
Lbs
Lint
/ A
cre
Split growers fields (3 total), Diamond applied approx. 3
Location
Large Block Evaluation of Diamond - 2010
1527
1424
1348
1264
+160 lb
+179 lb
1264
Washington2 Sunflower Mean
Split growers fields (3 total), Diamond applied approx. 3rd week of squaring
Location
Insecticide Application Timings
DiamondNeonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsOP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
• Dow AgroSciences
• Sulfoxaflor
• 50% WG
• Cotton
• 0.75-2.88 oz/A
• True Bugs:cotton aphidtarnished plant bug
**Transform is not labeled at this time****Transform is not labeled at this time**
• Section 18 granted for 2012 in the Delta counties to control tarnished plant bug
• Section 3 registration expected soon
Transform 50 WG
• Section 3 registration expected soon
• Public comment period just ended(February 12, 2013)
Section 18 granted for 2012 in the Delta counties to control tarnished plant bug
Section 3 registration expected soon
Transform 50 WG
Section 3 registration expected soon
Public comment period just ended
“Do not approve Sulfoxaflor. Do not decimate further the bee populations in the US. madness of continual dumping of these toxic chemicals in our environment must stop.
Comments on EPA Website
time to restore, time to stop destroying and poisoning.”
Please read before approving this Bee Killing Poison: “We’re facing the extinction of a species.”
“Do not approve Sulfoxaflor. Do not decimate further the bee populations in the US. The madness of continual dumping of these toxic chemicals in our environment must stop. It is
Comments on EPA Website
time to restore, time to stop destroying and
Please read before approving this Bee Killing “We’re facing the extinction of a
Tarnished Plant Bug Management with Transform7 Days After Application
15
20
25
30
Nym
phs/
5 ft.
0
5
10
Nym
phs/
5 ft.
cc
c c
+ Transform at 0.022 lb ai/A
Tarnished Plant Bug Management with Transform7 Days After Application
a
c
b
cc c
Cotton Aphid Leaf-Dip Bioassays 72 HAT
80
100
120
140
LC50
(ppm
)
47.8 Fold
0
20
40
60
Centric Sulfoxaflor
LC50
(ppm
)
5.5
Dip Bioassays – 2008-201272 HAT
Sulfoxaflor Carbine
3.3 Fold5.5 Fold
Insecticide Application Timings
DiamondNeonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsOP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
Insecticide Application Timings
Diamond
Transforms “Best” FitNeonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsTransforms “Best” Fit OP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
11.21.41.61.8
2
Mite
App
sCorrelation Between TPB Control and
00.20.40.60.8
1
0 1 2 3
Mite
App
s
TPB Apps
Control and Spider Mite Control
4 5 6 7 8
TPB Apps
Insecticide Application Timings
Diamond
Transforms “Best” Fit
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsTransforms “Best” Fit
Neonics
OP’s and Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
TPB Impact on Yields
1000
1100
1200
1300
1400Initiate
Poun
ds (l
int p
er a
cre)
400
500
600
700
800
900
1000
2 3 4
Poun
ds (l
int p
er a
cre)
Week of Flowering at Initiation/Termination of Control
Critical Period
TPB Impact on YieldsTerminate
5 6 7
Week of Flowering at Initiation/Termination of Control
Critical Period
Insecticide Application Timings
Diamond
Transforms “Best” FitNeonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsTransforms “Best” Fit OP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
Insecticide Application Timings
DiamondNeonics
Cotton Aphid
Plan
ting
1stSq
uare
1stFl
ower
~May 1 ~June 1 ~July 1
Tarnished Plant Bug
Insecticide Application TimingsOP’s and
Pyrethroids
Everything
Peak
Flo
wer
Cut
out
~July 1 ~July 21 ~Aug 15
Summary and Conclusions
Manage for Earliness
Use Diamond Early
Rotate Chemistry
www.plantmanagementnetwork.org
Summary and Conclusions
Manage for Earliness
Use Diamond Early
Rotate Chemistry
www.plantmanagementnetwork.org
Angus Catchot, Don Cook, Fred Musser, Gus Lorenz, Glenn Studebaker, Scott Akin, Scott Stewart, Roger Leonard, Kelly Tindall, David Kerns, and
Jeff Gore, MSU, Stoneville(662)820-9969
Angus Catchot, Don Cook, Fred Musser, Gus Lorenz, Glenn Studebaker, Scott Akin, Scott Stewart, Roger Leonard, Kelly Tindall, David Kerns, and Sebe Brown