Grower and Professional Meeting Slides

1
North Carolina Cotton Acreage(1972 - 2004)
Bollgard Cotton Acreage
Total Cotton Acreage
Pre-Eradication
Post-Eradication
Acreage (x 1,000)
Year
2
North Carolina Cotton Acreage1996 - 2004
Bollgard Cotton Acreage
Conventional Cotton Acreage
Acreage (x 1,000)
Year
3
Boll Weevil Pheromone Trap CapturesContainment
Program, 1993 - 2004
NORTH
SOUTH
YEAR
VIRGINIA
CAROLINA
CAROLINA
GEORGIA
(Number of Counties with Boll Weevils)
4
Bollgard Cotton Acreage inNorth Carolina, 1996 -
2004
Acreage

Year
State
Bollgard
Bollgard
1996
717,000
20,000
2.8
1997
668,000
20,000
3.0
1998
695,000
88,000
12.6
1999
861,000
174,000
20.2
2000
901,000
492,000
54.6
2001
956,000
621,000
65.0
2002
925,000
645,000
69.7
2003
785,000
573,000
73.0
2004
722,000
600,000
83.0
5
Efficacy of New Insecticides and Bollgard Cotton
Against Selected Caterpillar Species
Estimates of various entomologists throughout
the cotton belt. Steward may show some
plant bug and stink bug activity.
G good activity (standard treatment) G-
slightly worse G slightly better F fair
activity P poor or no activity U unknown
limited data.
BW bollworm TBW tobacco budworm BAW beet
armyworm FAW fall armyworm SL/CL soybean
cabbage loopers ECB European corn borer CW
cut worm
6
Toxicity of New Insecticides and Bollgard Cotton
Against Beneficial Insects in NC
Estimates of various entomologists throughout
the cotton belt. Toxicity rating 0
none L low M medium H high.
7
Comparison of Selected Bollworm Thresholds on
Bollgard Cotton, 1997-1999
8
Effect of Disruptive Insecticide Spray on Boll
Damage in Untreated Bollgard Cotton in North
Carolina, 1996-2000
Damaged Bolls
9
Impact of No-Till Cotton on Thrips Levels and
Bollworm Damage in Scotland County, NC 1997
Total Thrips / 5 Plants
Thrips numbers mean of 2 tillage/herbicide
treatments per cover. Bollworm damage mean
of 8 tillage/herbicide treatments per cover.
10
Thrips Control in UNR Cotton (7.5 rows) Wilson,
NC, 1999 (n2 tests)
Rate Thrips / Yield
Value Treatment (Prod./A) 5 plants
(Lb. lint) 0.50 0.60 0.70 Orthene
(2x) 0.25 27.6 b 638 a
312 375 439 Temik 8.0
67.6 a 744 a 348 422
497 Temik 10.0 53.5 a
718 a 329 401 473 Temik
16.0 53.3 a 759 ab 331
407 483 Check - -
52.2 a 568 b 284 341
398
Cost Cotton _at_ price / lb. Temik - 45.00/A
Gaucho - 19.71/A Orthene - 5.19
(alone), 2.19 (sprayed with glyphosate).
11
Cost and Benefits of At-Planting Insecticide
Persistence
Product Cost (weeks) Aphids
Nematode Yield Temik, 5 lb. 16.35
5-6 Yes Yes More Temik, 3
lb. 9.81 4 Yes / -
More Gaucho Orthene
8.71 31 Yes No More
Disyston GR 6.7 lb. 11.05 4
No No More Disyston EC 16 oz.
8.75 3 No No
More Thimet, 5 lb. 11.40 4
No No More Phorate, 5 lb.
10.00 4 No No
More
Gaucho followed by Orthene foliar _at_ ca. 3 weeks
JVD
12
Hosts of Helicoverpa zea (Corn Earworm)in North
Carolina
COTTON SOYBEAN PEANUT
WILD HOSTS CORN
CORN
1
2
3
13
Adult Vial Test For Resistance
A method of placing budworm or bollworm moths
into chemically treated glass vials, to help
determine the tolerance or resistance of a local
population to insecticides, such as pyrethroids.
5 ug
UTC
10 ug
14
Bollgard Cotton Adoption in NC 1996 - 2004
(Percent of total cotton acreage.)
70
65
83
73
55
Bollgard Acres (x 1000)
20
13
3
2.8
Year
15
Bollworm Thresholds vs Returns in Dollars(1984 -
1987 n 6 tests)
250
( Return / Acre) gt Control
200
34
Cotton 0.65 / lb. lint
150
Dollar Return
40
100
B Bloom Threshold E Egg Threshold L Larval
Threshold 1 1 Week Past Larval 2 2 Weeks Past
Larval
44
50
56
0
B E L 1 2
Control
16
Light Trap Capture of Third Generation (F2)H.
Zea in Northern Southern NC, 1986 - 1997
Southern NC
Light Trap Counts
2660 2570
1976-78
Year
17
Corn and Cotton Acreage in NC, 1986 - 2001
201
421
11
Acreage (x 100,000)
1976-78
Year
18
Farm Value of North Carolinas Major Field Crops
in 2000.
19
Impact of Bollworms on Yield in
Untreated Conventional Cotton in NC, 1980 - 2000
Mean of 38.6 yield loss by bollworms
Lint Yield Loss
Year
20
Relative Amount of B.t. Needed to Control
Certain Cotton Pests.
B.t. Dosage Expression for Control (Cry-1A(c))
Cotton Leaf Worm European Corn Borer
Tobacco Budworm
Pink Bollworm