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1997 Sunflower Grower Survey of Pest Problems and Pesticide Use |
Table 37. Effectiveness of herbicidesa on weed control in sunflower in 1997.
Kansas |
Minnesota |
North Dakota |
South Dakota |
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| Herbicide | Excel. | Good | Fair | Poor | Excel. | Good | Fair | Poor | Excel. | Good | Fair | Poor | Excel. | Good | Fair | Poor | |||
-- % repondents -- |
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| Assert | -- | -- | -- | -- | 36.0 | 52.0 | 12.0 | 0.0 | 51.3 | 35.9 | 12.8 | 0.0 | -- | -- | -- | -- | |||
| Poast | -- | -- | -- | -- | 18.2 | 54.5 | 27.3 | 0.0 | 37.0 | 55.6 | 7.4 | 0.0 | 55.6 | 40.7 | 0.0 | 3.7 | |||
| Prowl (spring) | 13.9 | 38.9 | 16.7 | 30.6 | 25.0 | 58.3 | 8.3 | 8.3 | -- | -- | -- | -- | 18.8 | 50.0 | 18.8 | 12.5 | |||
| Roundup (pre) | 36.4 | 54.5 | 0.0 | 9.1 | -- | -- | -- | -- | 47.6 | 38.1 | 14.3 | 0.0 | 40.0 | 36.0 | 16.0 | 8.0 | |||
| Sonalan (spring) | -- | -- | -- | -- | 28.6 | 47.6 | 23.8 | 0.0 | 25.6 | 49.6 | 22.5 | 2.3 | 34.2 | 31.6 | 21.1 | 13.2 | |||
| Trifluralin (fall) | -- | -- | -- | -- | -- | -- | -- | -- | 33.3 | 33.3 | 20.0 | 13.3 | -- | -- | -- | -- | |||
| Trifluralin (spring) | 23.8 | 52.4 | 19.0 | 4.8 | 18.8 | 43.8 | 37.5 | 0.0 | 16.8 | 40.0 | 29.5 | 13.7 | 25.4 | 34.3 | 28.4 | 11.9 | |||
aIncludes all herbicides with 10 or more responses.