Soybean insect control

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

cyfluthrin (R)
Baythroid 2 EC

1.6-2.6 oz

0.025-0.04

49-80

12 hr

45 d

Pyrethroids provide residual activity for velvetbean caterpillar.

Defoliation should not exceed 15-20% after mid-bloom or 30% before mid-bloom.  Consider population size, canopy density, and temperature in selecting rate.

After pods appear, treat for 2 or more large (>0.5 in) CEW per row ft.

*Use low rates for green cloverworms that infrequently require control.

beta-cyfluthrin (R)
Baythroid XL 1 EC

1.6-2.6 oz

0.0125-0.02

49-80

12 hr

45 d

lambda-cyhalothrin (R)
Karate Z 2.08 CS
Warrior 1 CS
Silencer 1 EC

0.96-1.6 oz
1.92-3.2 oz
1.92-3.2 oz

0.0156-0.026

80-133
40-66.6
40-66.6

24 hr

30 d

esfenvalerate (R)
Asana XL 0.66 EC
Adjourn 0.66 EC

5.8-9.6 oz
5.8-9.6 oz

0.03-0.05

13-22
13-22

12 hr

21 d

gamma-cyhalothrin (R)
Prolex 1.25 CS

0.77-1.28 oz

0.0075-0.0125

100-166

24 hr

30 d

zeta-cypermethrin (R)
Mustang Max 0.8 EC

2.8-4.0 oz

0.0175-0.025

32-45.7

12 hr

21 d

Product (non-pyrethroids)

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

thiodicarb (R)
Larvin 3.2 F

10-16 oz

0.25-0.4

8-12.8

48 hr

28 d

indoxacarb
Steward 1.25 EC or SC

5.6-11.3 oz

0.054-0.11

11.3-22.8

12 hr

21 d

spinosad
Tracer 4 SC

1.5-2.0 oz

0.047-0.0625

64-85

4 hr

28 d

methomyl (R)
Lannate 2.4 LV
Lannate 90 SP

0.75-1.5 pt
4 oz

0.225-0.45

5.3-10.7

48 hr

14 d

carbaryl
Sevin 80 S
Sevin XLR Plus
Sevin 4 F

0.94-1.56 lb
0.75-1.25 qt
0.75-1.25 qt

0.75-1.25

-
3.2-5.33
3.2-5.33

12 hr

21 d

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

indoxacarb
Steward 1.25 EC or SC

5.6-11.3 oz

0.054-0.11

11.3-22.8

12 hr

21 d

See defoliation thresholds for corn earworm.  It takes 6-8 large loopers per row ft to cause major defoliation.

spinosad
Tracer 4 SC

1.0-2.0 oz

0.03125-0.062

64-128

4 hr

28 d

methoxyfenozide
Intrepid 2 F

4-8 oz

0.0625-0.125

16-32

4 hr

14 d

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

acephate
Orthene 97
Orthene 90 S or Prill
Acephate 90 SP

4.6-8 oz
5.0-8.96 oz
5.0-8.96 oz

0.28-0.5

-
-
-

24 hr

14 d

Treat only when stand is threatened

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

cyfluthrin (R)
Baythroid 2 EC

1.6-2.6 oz

0.025-0.04

49-80

12 hr

45 d

Grasshoppers are primarily a problem on seedling soybeans in reduced tillage systems.

beta-cyfluthrin (R)
Baythroid XL 1 EC

1.6-2.6 oz

0.0125-0.02

49-80

12 hr

45 d

lambda-cyhalothrin (R)
Karate Z 2.08 CS
Warrior 1 CS
Silencer 1 EC

1.6-1.92 oz
3.2-3.84 oz
3.2-3.84 oz

0.026-0.03

66.6-80
33.3-40
33.3-40

24 hr

30 d

esfenvalerate (R)
Asana XL 0.66 EC
Adjourn 0.66 EC

5.8-9.6 oz
5.8-9.6 oz

0.03-0.05

13-22
13-22

12 hr

21 d

gamma-cyhalothrin (R)
Prolex 1.25 CS

1.28-1.54 oz

0.0125-0.015

83-100

24 hr

30 d

zeta-cypermethrin (R)
Mustang Max 0.8 EC

3.2-4.0 oz

0.02-0.025

32-40

12 hr

21 d

acephate
Orthene 97
Orthene 90 S or Prill
Acephate 90 SP

4.6-8 oz
5.0-8.96 oz
5.0-8.96 oz

0.28-0.5

-
-
-

24 hr

14 d

methyl parathion (R)
Penncap-M 2 E
Methyl 4 E

2-3 pt
1.0-1.5 pt

0.5-0.75

2.66-4.0
5.33-8.0

4 d

14 d

carbaryl
Sevin 80 S
Sevin XLR Plus
Sevin 4 F

0.94-1.56 lb
0.75-1.25 qt
0.75-1.25 qt

0.75-1.25

-
3.2-5.33
3.2-5.33

12 hr

21 d

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

cyfluthrin (R)
Baythroid 2 EC

1.6-2.6 oz

0.025-0.04

49-80

12 hr

45 d

After pods appear, treat when stink bugs reach 1 per row ft.

Methyl parathion, Penncap, and Orthene might increase chances for later problems with loopers and velvetbean caterpillars.

beta-cyfluthrin (R)
Baythroid XL 1 EC

1.6-2.6 oz

0.0125-0.02

49-80

12 hr

45 d

lambda-cyhalothrin (R)
Karate Z 2.08 CS
Warrior 1 CS
Silencer 1 EC

1.6-1.92 oz
3.2-3.84 oz
3.2-3.84 oz

0.026-0.03

66.6-80
33.3-40
33.3-40

24 hr

30 d

gamma-cyhalothrin (R)
Prolex 1.25 CS

1.28-1.54 oz

0.0125-0.015

83-100

24 hr

30 d

zeta-cypermethrin (R)
Mustang Max 0.8 EC

3.2-4.0 oz

0.02-0.025

32-40

12 hr

21 d

Product (non-pyrethroids)

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

acephate
Orthene 90 S or Prill
Orthene 97
Acephate 90 SP

9.6-16.0 oz
8.2-14.8 oz
9.6-16.0 oz

0.54-0.9

-
-
-

24 hr

14 d

methyl parathion (R)
Penncap-M 2 E
Methyl 4 E

2 pt
1 pt

0.5

4
8

4 d

14 d

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

dimethoate
Dimethoate 4 EC

1 pt

0.5

8

48 hr

21 d

Can be a problem in drought stress

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

cyfluthrin (R)
Baythroid 2 EC

1.6 oz

0.025

80

12 hr

45 d

VBC can occur in high numbers but is easily controlled.
Use higher rates for high populations.  Significant defoliation can be caused by 4-6 large VBC per row ft, and pod clipping can occur after defoliation.  Treat when defoliation exceeds 15% after mid-bloom and at 30% before mid-bloom. Pyrethroids provide extended residual control of VBC when applied earlier in season.  Dimilin is a preventative treatment for high risk areas.

beta-cyfluthrin (R)
Baythroid XL 1 EC

1.6 oz

0.0125

80

12 hr

45 d

lambda-cyhalothrin (R)
Karate Z 2.08 CS
Warrior 1 CS
Silencer 1 EC

0.96 oz
1.92 oz
1.92 oz

0.0156

133
66.6
66.6

24 hr

30 d

esfenvalerate (R)
Asana XL 0.66 EC
Adjourn 0.66 EC

2.9 oz
2.9 oz

0.015

44
44

12 hr

21 d

gamma-cyhalothrin (R)
Prolex 1.25 CS

0.77 oz

0.0075

166

24 hr

30 d

zeta-cypermethrin (R)
Mustang Max 0.8 EC

2.8 oz

0.0175

45.7

12 hr

21 d

Product (non-pyrethroids)

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

methoxyfenozide
Intrepid 2 F

4 oz

0.0625

32

4 hr

14 d

diflubenzuron
Dimilin 2 L
Dimilin 25 W

2-3 oz
2-3 oz

0.03125-0.047

42.6-64
-

12 hr

21 d

thiodicarb (R)
Larvin 3.2 F

8 oz

0.2

16

48 hr

28 d

spinosad
Tracer 4 SC

1-2 oz

0.03125-0.062

64-128

4 hr

28 d

methomyl (R)
Lannate 2.4 LV
Lannate 90 SP

4.8-9.6 oz
1.6-3.2 oz

0.09-0.18

13.3-26.6
-

48 hr

14 d

carbaryl
Sevin 80 S
Sevin XLR Plus
Sevin 4 F

0.5-1.0 lb
1.0-1.5 pt
1.0-1.5 pt

0.5-0.75

-
5.33-8.0
5.33-8.0

12 hr

21 d

methyl parathion (R)
Penncap-M 2 E
Methyl 4 E

2 pt
1 pt

0.5

4
8

48 hr

14 d

Product/acre

Lb ai/acre

Acre/gal

REI

PHI

Comments

chlorpyrifos
Lorsban 15 G
chlorpyrifos (R)
Lorsban 4 E
Chlorpyrifos 4 E
Nufos 4 E

6.7-13.3 lb

1 qt
1 qt
1 qt

1.0-2.0

1.0-2.0

-

4
4
4

24 h

24 h

7 d

28 d

PREVENTION: Reduced tillage significantly reduces LCB damage, as does early season irrigation.  AT PLANTING: Apply 8-15 oz 15G/1000 row ft (38’ rows) in a 6-8-inch band over the row.  Incorporate lightly with press wheel and drag chain or tines.  RESCUE: When 10% of seedlings show damage, apply 4E in 25 gal water in a 6-inch band directly at the base of plant.  Rescue control is erratic.