ndsucpr_L_sm_W.jpg (13414 bytes)
weeds_Logo_Lg.jpg (6562 bytes)


ISSUE 3  May 17, 2001

Updated 2001 Rotation Restrictions for Crops Grown in North Dakota

Herbicide

Alf-
alfa

Bar-
ley

Can-
ola

Corn

Cra-
mbe

CRP
grss

Dry
bean

Flax

Oat

Chck
Pea

Dry
Pea

Pot-
ato

Saff
lowr

Soy-
bean

Sgr-
beet

Sun-
flwr

HRS/
Durm

 

-------------------------------------------------------- (months after application) --------------------------------------------------------------

DO NOT USE IN ND = Beacon, Canopy, Canopy XL, Classic, Concert, Exceed, Reliance, Scepter, Spirit, Steel, Synchrony

Accent(a)

12

8

18

0

18

18

10

18

8

10

10

18a

18

0.5

18a

11/18a

8

Accent Gold

10.5

8

26b

0

B

26

10.5

B

8

18

18

18

B

10.5

26b

18

8

Ally(c)

34d

10

34d

22e

34d

4

22e

22e

10

34d

34d

34d

22e

34d

34d

22e

1/10

Amber

B

18c

B

22

B

B

B

B

18c

B

B

B

B

36b

B

24b

0

Assert

15

NCS

12/15f

NCS

12/15

4

NCS

15

15

15

15

15

NCS

NCS

20

NCS

NCS

Atrazine/Aatrex

B

B

B

0

B

2CS

B

B

B

2CS

2CS

B

B

B

B

B

B

Atrazine Premixes - Refer to Atrazine.

Authority

12

4

30

10

30

12

12

18

4

12

12

30

30

0

30

-

4

Axiom

12

12

18

0

18

12

12

12

12

12

12

1

12

0

18

12

12

Balance/Pro(j)

10

6

18

0

18

18

18

18

6

18

18

6

6

6

18

10

6

Basis

10

8

18

0

18

18

8

18

8

8

8

4

18

0.5

10

10

8

Basis Gold

18

18

18

0

18

8

18

18

18

18

18

18

18

10

18

18

18

Beacon(r)

8

3

18

0.5

18

18

8

18

8

8

8

2CS

18

8

B

8

8

Brdstrike+Dual

4

4.5

26b

0

26b

12

4

26b

4.5

4

4

12

26

0

26b

18

4.5

Brdstrk+Treflan

4

4

B

8

B

12

4

B

18

4

4

12

B

0

26b

18

4

Buckle

NCS

0

NCS

16

NCS

18

NCS

NCS

16

NCS

NCS

NCS

NCS

NCS

14g

NCS

NCSg

Callisto

Refer to label for crop rotation restrictions.

Canvas(0.2 oz/A)e

22

10

22

22

22

2-4

22

22

10

22

22

22

10

22

22

22

1/10

Celebrity Plus

12

8

18

0.25

18

18

10

18

8

10

10

18a

18

4

18a

10/18a

8

Curtail/M

10.5

1

10.5

1

10.5

1

10.5m

NCS

1

18

18

18

10.5

10.5m

NCS

10.5m

1

Degree(n)

NCS

NCS

NCS

0

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

4

Dicamba(<1.5pt) h

4

4h

4

0h

4h

4

4

4

4h

4

4

4

4

4

4

4

0h

Domain

12

12

18

1

18

18

18

18

18

18

18

1

18

0

18

18

12

Distinct(h)

4

4

4

4h

4

4

4

4

4

4

4

4

4

4

4

4

0

Epic

12

12

12

0

12

12

18

12

12

12

12

6

12

6

12

12

12

Everest

NCS

9

9

NCS

NCS

NCS

NCS

NCS

18

NCS

11

9

NCS

9

9

NCS

4

Extreme

Same as Pursuit

Far-Go

NCS

0

NCS

NCS

NCS

NCS

NCS

NCS

18

NCS

NCS

NCS

NCS

NCS

NCS

NCS

0

Finesse

B

16

B

B

B

4

B

B

10

B

B

B

B

B

B

B

0

FirstRate

9

B

B

9

B

9

9

B

9

9

9

18

B

0

30b

30b

3

Flexstar

18

4

18

10

18

4

10

18

4

10

10

18

18

0

18

18

4

Harness(n)

NCS

NCS

NCS

0

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

4

Hornet

10.5m

4

B

0

B

12

10.5m

B

4

10.5m

10.5m

18

B

10.5m

B

18

4

Gauntlet

12

12

24

10

24

12

12

B

12

12

12

B

B

0

30

30

4

Liberty ATZ

B

B

B

0

B

2CS

B

B

B

2CS

2CS

B

B

B

B

B

B

Lightning

9.5

9.5

40b

8.5

40b

40

9.5

40b

18

9.5

9.5

26

18

9.5

40b

18b

4

Matrix

12

9/19p

18

0

18

18

10

18

9

18

18

0

18

10

18

10

9

Maverick

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

0

Muster

22

10

22

22b

22b

22

22

10

10

22

22

22b

22b

22b

22b

22b

10

NorthStar(r)

8

8

18

0.5

18

18

8

18

8

8

8

18

18

8

36r

18

8

Paramount

10

10

10

10

10

10

10

24

10

24

24

10

10

10

24

10

0

Peak(r)

22

0

22

1

22

10

22

22

0

10

10

22

22

22

22

22

0

Permit

9

2

15

1

B

2

9

B

2

B

9

9

B

9

36

18

2

Plateau

9

18

40

9

40

0

9

26

18

9

9

40

26

9

40

26

4

Prowl/Pendimax

NCS

NCS

NCS

0s

NCS

NCS

0

NCS

NCS

0

0

0

NCS

0

2CS

0

NCS

Pursuit

4

18

40b

8.5

40b

4

4

26

18

4

4

26

18

0

40b

18

4

Pursuit Plus

NCS

18

40b

8.5

40b

NCS

4

26

18

4

4

26

18

0

40b

18

NCS

Python

4

4

26b

0

26b

12

4

26b

4

4

4

12

26b

0

26b

18

4

Raptor

9

4

18

9

18

9

9

18

9

9

9

9

18

0

18t

9

3

Rave

B

18c

B

22

B

B

B

B

18c

B

B

B

B

36b

B

24b

0

Reflex

18

4

18

10

18

4

10

18

4

10

10

18

18

0

18

18

4

Sencor(u)

4

8u

18

4

18

12

12

2

12

12

12

4

12

4

18

12

8u

Sonalan

NCS

NCS

NCS

NCS

NCS

3w

0

NCS

NCS

0

0

NCS

NCS

0

2CS

0

NCS

Spartan

10

4

24

10

24

12

10

24

4

10

10

10

10

0

24

-

4

Spirit(r)

18

3

18

1

18

10

18

18

3

10

10

18

18

18

18r

18r

3

Steadfast

12

8

18

0

18

18

10

18

8

10

10

18a

18

0.5

18a

11/18

8

Stinger

10.5

0

0

0

0

0

10.5m

0

0

18

18

18

10.5

10.5m

0

10.5m

0

Surpass(n)

NCS

NCS

NCS

0

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

4

Tordon (1.5 oz)

2CS

NCS

2CS

2CSx

2CS

1

2CS

NCS

NCS

2CS

36

2CS

2CS

2CS

2CS

2CS

NCS

TopNotch(n)

NCS

NCS

NCS

0

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

NCS

4

Trifluralin(y)

0

NCS

0

NCS

0

18/21

0

0

18

0

0

0

0

0

2CS

0

NCS

Valor

12b

4

12b

1

12b

12b

4

12b

12b

4

12b

12b

12b

0

12b

1

2

NCS = Next cropping season after herbicide application.
2CS = Second cropping season after herbicide application.
MAA = months after application.

Field Bioassay Instructions - Refer to label or paragraph Y7 in the Narrative Section.

a Soil pH <7.5 = 10 MAA for sorghum and 11 MAA for sunflower.
Soil pH >7.5 = 18 MAA for sorghum and sunflower
Soil pH <6.5 = 10 MAA for sugarbeet and all other crops not listed.
Soil pH >7.5 = 18 MAA for sugarbeet and all other crops not listed and cumulative precipitation in the 18 MAA period must exceed 28 inches (includes potatoes).
B or b = Bioassay. Do not plant until field bioassay indicates it is safe.
Crop rotation after Atrazine is rate and soil pH dependant. Accent Gold, Broadstrike/Python, and Hornet require a 26 month rotation and a successful field bioassay.
FirstRate requires a 30 month rotation and a successful field bioassay. Lightning, Pursuit, and Pursuit Plus requires a 40 month rotation and a successful field bioassay.
c Do not use on soil with pH greater than 7.9. Barley and oat can be planted 6 months after Amber application west of highway 83.
d Requires soil pH to be 7.9 or less and a 34 month minimum rotation interval and 28 inches of cumulative precipitation.
e Requires soil pH of 7.9 or lower, 22 months and 22 inches of precipitation west of Hwy 1 or 34 months and 34 inches of precipitation east of Hwy 1. The previous restriction also applies to Canvas at rates greater than 0.2 oz DF/A.
f Imi resistant canola varieties may be planted the season after application.
Conventional canola varieties may be planted the following season after application at 1 pt/A in ND counties of Cavalier, Pembina, Ramsey, Rolette, Towner, and Walsh and MN counties of Kittson, Marshall, Pennington, Red Lake, and Roseau.
g Sugarbeet requires 20 months in areas that received less than 20 inches of precipitation during the growing season.
Buckle is labeled as a fall treatment in durum wheat and spring PPI application for durum and HRSW (some varieties excluded).
h Any rotational crop may be planted 120 days following application of dicamba at 1.5 pt/A or less, excluding days when ground is frozen. For wheat, barley, oat, and grass seedings, allow 45 days per pint/A of dicamba after application before planting.
For all crops and for rates greater than 1.5 pt/A allow 45 days per 1 pt/A of dicamba used excluding days when ground is frozen.
j Balance requires 15 inches of cumulative precipitation from application to planting of rotational crop. Furrow or flood irrigation should not be included in total. No more than 7 inches of overhead irrigation included in total.
m Do not plant dry bean, soybean or sunflower for 18 months on soil with less than 2% OM and rainfall less than 15 inches during the 12 MAA OR may be planted 12 MAA if risk of injury is acceptable.
Do not plant lentil, pea, potato or any other broadleaf crop grown for seed for 18 months unless risk of injury is acceptable.
Perform a field bioassay prior to planting for areas that receive less than 15 inches of rainfall and have less than 2% OM.
n Restriction applies to DoublePlay, FulTime, Harness, Surpass, and TopNotch.
Label restricts crops allowed to be planted the next season as corn, soybean, sorghum, and wheat only.
Restriction to other crops is based on incomplete residue data and not on crop safety.
p Barley can be planted 9 months after application in Cass, Grand Forks, Pembina, Towner, Traill, and Walsh counties of ND.
In all other counties of ND allow an 18 month rotation restriction before planting barley.
r Do not apply Beacon, NorthStar, Peak, or Spirit in the Red River Valley of ND and MN or on soil with pH greater than 7.8.
User must follow crop rotation restrictions as given on labels. Refer to label for additional information on soil pH, rotation intervals, maximum use rates, application timing and other restrictions. The number of months after application given in the previous table are applicable only on soil with a pH less than 7.8, only using less than maximum rates allowed, only using approved application timings, and only on approved locations (inside or outside Red River Valley) as indicated on the label.
Do not replant to any broadleaf crop if less than 10 inches of precipitation has occurred since Peak application.
For situations not covered on the label or in the previous table, conduct a soil bioassay to determine if Peak soil residue will allow successful planting of desired rotational crop.
s Corn can be planted only if Prowl is applied PRE. DO NOT APPLY PPI.
t Rotation to sugarbeet is after 26 months if soil pH is less than 6.2.
u Must add 2 months if soil pH is 7.5 or above. Wheat and barley can be planted 4 MAA following lentils or soybeans.
w CRP grasses may be planted 13 MAA under the following conditions:
1. By label this is deemed as a non-standard rotation.
2. Dow assumes no liability for injury.
3. Fall is recommended as the best time to plant CRP grasses.
4. A field bioassay is recommended prior to planting CRP grasses.
x Do not plant corn or sorghum until soil samples analyzed for Tordon residue indicates no detectable levels present.
Restriction is based on non-legal residue that may be found in corn and sorghum and not on crop safety.
y Oats, sorghum, and annual or perennial grass crops may be planted at least 12 MAA in areas that received 20 inches or more of precipitation during the growing season. CRP grasses may be planted 18 MAA if trifluralin is spring applied or 21 MAA if fall applied.

Richard Zollinger
NDSU Extension Weed Specialist
rzolling@ndsuext.nodak.edu


cprhome.jpg (3929 bytes)topofpage.jpg (3455 bytes)tableofcontents.jpg (4563 bytes)previous.jpg (2814 bytes)next.jpg (1962 bytes)