Will Herbicide Carryover Hurt Fall-Seeded Cover Crops?

Corn and soybean herbicide carryover can impact fall cover crop stand establishment.

Published on: Aug 22, 2012

Typical herbicide rates, sensitive species, half- life, and potential for carryover injury to sensitive crops (carryover potential based on half lives and soil availability).

Herbicide

Typical rate/acre

Sensitive species

Half life (days)

Carryover potential

Accent

2/3 oz

brdlfs+grass

21

Low

Assure/Targa

8 oz

grass

60

Low

Atrazine

1 lb

brdlfs+grass

60

Moderate

Authority

4 oz

brdlfs

32-302

Moderate

Balance Pro

2 fl oz

brdlfs+grass

50-120

Moderate

Callisto

6 fl oz

brdlfs

5-32

Moderate

Classic

2 oz

brdlfs

40

Moderate

Dual II Mag

1.67 pt

brdlfs+grass

15-50

Low

FirstRate

0.33 oz

brdlfs

8-33

Low

Harmony

1/8 oz

brdlfs

12

Low

Harness

2 pt

brdlfs+grass

10-20

Low

Impact

0.75 fl oz

brdlfs+grass

14

Low

Laudis

3 fl oz

brdlfs+grass

14

Low

Outlook

16 fl oz

brdlfs+grass

20

Low

Peak

1 oz

brdlfs

9-152

Moderate

Permit

2/3 oz

brdlfs

9-27

Low

Prowl H2O

3 pt

brdlfs+grass

44

Low

Pursuit

4 fl oz

brdlfs+grass

60-90

Moderate

Raptor

5 fl oz

brdlfs+grass

20-30

Low

Reflex

1.5 pt

brdlfs

100

Moderate

Resolve

2 oz

brdlfs+grass

2-4

Low

Select

10 oz

grass

3

None

Sencor

0.33 lb

brdlfs+grass

14-60

Low

Sharpen

3 fl oz

brdlfs

7-35

Low

Simazine

1 lb

brdlfs+grass

60

Moderate

Stinger

5 oz

brdlfs

40

Moderate

Valor

2.5 oz

brdlfs

12-20

Low