期刊
WEED TECHNOLOGY
卷 26, 期 4, 页码 638-643出版社
WEED SCI SOC AMER
DOI: 10.1614/WT-D-12-00058.1
关键词
Nonselective herbicide; growth regulator herbicide; agrochemical; soybean
With the forthcoming release of the 2,4-D- and dicamba-resistance traits stacked with either glyphosate or glufosinate resistance, the use of 2,4-D or dicamba alone or in tank mix with glyphosate or glufosinate likely will increase the control of glyphosate-resistant weeds in soybean. There also is an increasing trend among soybean growers to apply POST herbicides in combination with fungicides, insecticides, and fertilizers to reduce trips over the field. Greenhouse experiments were conducted during 2011 and 2012 to evaluate glyphosate or glufosinate applications with growth regulator herbicides and other agrochemicals for the control of glyphosate-resistant horseweed and glyphosate-resistant common larnbsquarters. In most cases, glyphosate or glufosinate application with 2,4-D or dicamba provided 80% or more control of glyphosate-resistant horseweed and glyphosate-resistant common lambsquarters. These studies demonstrate that performance of glufosinate alone and with agrochemicals was poor on glyphosate-resistant common lambsquarters. However, no differences in glyphosate-resistant common lambsquarters biomass were noted among treatments including glufosinate alone, glufosinate plus growth regulator herbicides, and glufosinate plus growth regulator herbicides plus agrochemicals. The agrochemicals lambda-cyhalothrin, manganese, and pyraclostrobin did not affect weed control by glyphosate or glufosinate combinations with growth regulator herbicides. Visible soybean injury was noted at 1 wk after treatment (WAT) only when glufosinate was applied with lambda-cyhalothrin or pyraclostrobin but no differences in visible injury were seen with these combinations at 3 WAT.
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