期刊
WEED TECHNOLOGY
卷 25, 期 3, 页码 447-453出版社
WEED SCI SOC AMER
DOI: 10.1614/WT-D-10-00013.1
关键词
Chemical fallow; herbicide efficacy; herbicide resistance; synthetic auxins; winter wheat
资金
- U.S. Department of Agriculture Cooperative State Research, Education, and Extension Service
A study was conducted in summer fallow fields near Davenport, WA, and Pendleton, OR, in 2007 and 2008 to evaluate the POST weed control efficacy of herbicide treatments applied with a light-activated, sensor-controlled (LASC) sprayer compared to the broadcast application of glyphosate. The LASC application of glyphosate alone (at all rates) and in mixture with pyrasulfotole plus bromoxynil or 2,4-D had weed control (>= 88%) and dry weight (<= 6% of control) similar to the broadcast application of glyphosate across locations and years. Tumble pigweed and prickly lettuce control with bromoxynil, 2,4-D, or carfentrazone plus dicamba, was 12 to 85% less than glyphosate applied alone with LASC or broadcast sprayer. Overall, none of the tested alternate herbicides was promising enough to replace glyphosate under present conditions.
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