Control of Glyphosate-Resistant Marestail in Identity-Preserved or Glyphosate-Resistant and Glyphosate/Dicamba-Resistant Soybean with Preplant Herbicides

• 作者: Peter H. Sikkema
• 来源期刊: 美国植物学期刊(英文)
• 学科: 数学
• 关键词: Biomass Crop Injury Density GLYPHOSATE Herbicide Tankmixture METRIBUZIN Saflufenacil Yield
• 年，卷（期）: 2020,（6）
• 页码范围: 851-860
• 页数: 10页
• 分类号: O17

摘要

Two studies, each consisting of six field experiments were conducted in growers’ fields in 2018 and 2019 to determine the optimal herbicide tankmixes, applied preplant (PP) for the control of glyphosate-resistant<b><span style="font-family:Verdana;"> (</span></b><span style="font-family:Verdana;">GR</span><b><span style="font-family:Verdana;">)</span></b><span style="font-family:Verdana;"> marestail in</span><span style="font-family:Verdana;"> 1) identity-preserved and glyphosate-resistant soybean (Study 1) and, 2)</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;"><span style="font-family:Verdana;">glyphosate/dicamba-resistant soybean</span></span><span style="font-family:Verdana;"> (Study 2). </span><span style="font-family:Verdana;">There was no significant injury in soybean with the PP herbicides evaluated in both studies. </span><span style="font-family:Verdana;">In Study 1, at 8 weeks after treatment (WAA), glyphosate + saflufenacil, glyphosate + 2,4-D ester, glyphosate + pyraflufen/2,4-D, glyphosate +, 4-D choline or glyphosate + halauxifen-methyl, applied PP, controlled GR marestail 93%, 58%, 60%, 67% and 71%, respectively</span><span style="font-family:Verdana;">.</span><span style="font-family:Verdana;"> The addition of metribuzin to </span><span style="font-family:Verdana;">the tankmixes of glyphosate + </span><span style="font-family:Verdana;">saflufenacil</span><span style="font-family:Verdana;">, 2,4-D ester and pyraflufen/2,4-D increased the control to 98%, 91% and 95%, respectively. The addition of metribuzin + chlorimuron-ethyl to 2,4-D choline/glyphosate and glyphosate + halauxifen-methyl increased the control to 94% and 93%, respectively.</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">In Study 2, a</span><span style="font-family:Verdana;">t </span><span style="font-family:Verdana;">8 WAA,</span><span style="font-family:Verdana;"> glyphosate/dicamba</span><span style="font-family:Verdana;">,</span><span style="font-family:;" "