Wild Oats Report - 2001 Crops Day

2001 Wild Oat Control in Spring Wheat at Hettinger. (Eriksmoen) Reeder hard red spring wheat was seeded on April 26. Treatments were applied to 3 leaf wheat and to 2 to 3 leaf wild oats on May 25 with 40 F, 96 % RH, clear sky and 2 mph wind. There was a light frost 2 hours prior to application. Treatments were applied with a tractor mounted CO2 propelled plot sprayer delivering 17 gpa at 40psi through 8001 flat fan nozzles to a 5 foot wide area the length of 10 by 28 foot plots. The experiment was a randomized complete block design with four replications. Wild oat population was 47 plants per sq. foot. The trial was sprayed with 10 oz/A Starane + 1 pt/A Buctril + 1/3 oz/A Express on June 7 to control Broadleaf weeds. Evaluations for crop injury were on June 7, and for wild oat control on June 12, July 3 and on July 18. The trial was severely damaged by hail on June 18 and was not harvested.

 

Treatment

Product

Rate

6/12

7/3

7/18

Wioa

Wioa

Wioa

oz/A

----- % Control -----

1

Immb+Thif&Trib+Act 90

5+0.22+0.25%

76

85

96

2

Dife+Thif&Trib

12+0.22

68

60

50

3

Tral+Brox&MCPA+Supercharge+AMS

2.9+8+0.5%+20.4

85

85

81

4

Clodinafop+Brox&MCPA+DSV

0.8+8+0.8%

90

90

85

5

Fenoxaprop+Brox&MCPA

1.32+8

72

76

82

6

Flcz+Thif&Trib+2,4-Dioe+Act 90

0.42+0.22+4+0.25%

90

94

99

7

Immb+Dife+Thif&Trib+Act 90

3.7+8+0.22+0.25%

78

74

88

8

Flcz+Fenoxaprop+Brox&MCPA+Act 90

0.28+0.48+8+0.25%

86

91

92

9

Flcz+Fenoxaprop+Brox&MCPA+Act 90

0.28+0.66+8+0.25%

91

88

92

10

Flucarbazone+Fenoxaprop+Brox&MCPA

0.28+0.66+8

78

94

96

11

Flcz+Clodinafop+Brox&MCPA+DSV+Act 90

0.28+0.5+8+0.8%+0.25%

89

96

97

12

Untreated

0

0

0

0

C.V. %

16.3

18.3

13.1

LSD 5%

18

20

15

Summary

Crop injury was not observed on any treatment (data not shown). The difenzoquat treatment (trt 2) had poor season long wild oat control and had significantly lower wild oat control than the other treatments. Flucarbazone treatments (trts 6, 8, 9, 10 & 11) provided excellent season long wild oat control. Flucarbazone tank mix partners did not enhance or decrease wild oat control.

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