North Dakota State University

NDSU

North Central Research Extension Center
Brian Jenks
Weed Scientist
bjenks@ndsuext.nodak.edu

 
Denise Markle
Research Specialist
dmarkle@ndsuext.nodak.edu
Gary Willoughby
Research Specialist
gwillough@ndsuext.nodak.edu
5400 Highway 83 South
Minot, ND  58701-7662
701.857.7679
701.857.7676 (fax)

Weed control in Crambe. (2000) Brian Jenks, Denise Markle, Gary Willoughby, and Kent McKay. (NCREC, Minot). ‘Belann’ crambe was seeded at 25 lb/A on May 18 into 6-inch rows. Individual plots were 10 by 30 ft arranged in a RCBD with three replicates. Preplant incorporated (PPI) and preemergence (PRE) treatments were applied on May 18. The postemerence treatments were applied on June 22 and 23. PPI and PRE treatments were applied with a CO2 pressurized bicycle sprayer with XR80015 flat fan nozzles delivering 20 gpa at 30 psi. All POST treatments were applied using XR8001 flat fan nozzles delivering 10 gpa at 40 psi. The crambe was swathed August 15 and harvested August 28.

Treatmenta

Rate

Crambe

Rrpw

Yield

Tst Wt

Jun 20

Jul 1

Sep 12

Jul 1

 

 

—% Injury—

pl/m of row

% Control

lb/A

lb/bu

 

 

 

 

 

 

 

 

Untreated

 

0

0

18

0

1238

25.9

 

 

 

 

 

 

 

 

PPI

 

 

 

 

 

 

 

Treflan

2 pt

2

4

20

95

1427

26.1

Sonalan

3 pt

27

43

15

99

1506

25.5

Prowl

3.6 pt

17

38

20

98

1439

25.0

               

PRE/4-LEAF

        

 

     

Spartan / Assure II

0.125 lb ai / 8 fl oz

12

20

15

38

1250

25.9

Spartan / Assure II

0.25 lb ai / 8 fl oz

18

28

13

52

1311

25.0

Spartan / Assure II

0.5 lb ai / 8 fl oz

79

83

11

97

1317

24.5

Handweeded checkb

 

3

5

14

 

1545

25.6

 

 

 

 

 

 

 

 

4-LEAF/4-LEAFc

 

 

 

 

 

 

 

Assure II / Tough

8 fl oz / 1.5 pt

 

8

15

67

1315

25.4

Assure II / Muster

8 fl oz / 0.3 oz

 

7

17

63

1606

25.2

 

 

 

 

 

 

 

 

4-LEAF

 

 

 

 

 

 

 

Stinger + Assure II

5.33 fl oz + 8 fl oz

 

4

15

7

1346

25.0

Tough + Assure II

1.5 pt + 8 fl oz

 

11

14

72

1321

25.8

Muster + Assure II

0.3 oz + 8 fl oz

 

5

18

72

1351

25.3

Liberty

10 fl oz

 

22

17

50

1354

26.1

Liberty

20 fl oz

 

59

13

60

1274

24.9

LSD

 

6

14

NS

41

NS

NS

CV

 

18

37

25

9

14

3.2

a Assure II was applied with 0.25% NIS. Liberty was applied with 3 lb/A AMS.
b Treflan was applied at 1.5 pt PPI followed by Assure II at 8 fl oz POST to aid handweeding.
c First application was one day prior to second application.

We evaluated several non-registered herbicides compared to the standard treatments of Treflan, Sonalan, and Assure II. All treatments caused at least slight injury to crambe. Sonalan, Prowl, and Spartan caused moderate to severe crop injury. However, crambe yield with Treflan, Sonalan, and Prowl were similar to the handweeded check. The crambe recovered slightly from the Spartan injury, but yielded 200-300 lbs lower than the handweeded check. Tough, Muster, and Stinger caused slight crop injury. We saw little difference in crop injury when applying Tough or Muster in combination with Assure II or as separate applications.


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Last Updated: Thursday, May 27, 2004 02:49:18 PM
Published by North Dakota State University