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<...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:;" "展开更多
Eight field trials (<span style="font-family:Verdana;">2 in 2016, 3 in 2017, 3 in 2018) </span><span style="font-family:Verdana;">were conducted</span><span style="f...Eight field trials (<span style="font-family:Verdana;">2 in 2016, 3 in 2017, 3 in 2018) </span><span style="font-family:Verdana;">were conducted</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> in farmers’ fields with heavy infestations of GR </span><i><span style="font-family:Verdana;">Conyza</span></i><span style="font-family:Verdana;"> <i>canadensis</i></span><span style="font-family:Verdana;"> (Canada fleabane, horseweed or </span><span style="font-family:Verdana;">marestail</span><span style="font-family:Verdana;">) </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">to evaluate glyphosate (900 g ae ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) plus </span><span style="font-family:Verdana;">saflufenacil</span><span style="font-family:Verdana;"> (25 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">), 2,4-D ester (500 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) or paraquat (1100 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) applied </span><span style="font-family:Verdana;">preplant</span><span style="font-family:Verdana;"> (PP) as 2-way </span><span style="font-family:Verdana;">tankmixes</span><span style="font-family:Verdana;">, or in 3-way </span><span style="font-family:Verdana;">tankmixes</span><span style="font-family:Verdana;"> with sulfentrazone (140 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">), flumioxazin (107 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) or metribuzin (400 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">)</span><span><span style="font-family:Verdana;"> for the glyphosate-resistant (GR) </span><i><span style="font-family:Verda展开更多
文摘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:;" "
文摘Eight field trials (<span style="font-family:Verdana;">2 in 2016, 3 in 2017, 3 in 2018) </span><span style="font-family:Verdana;">were conducted</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> in farmers’ fields with heavy infestations of GR </span><i><span style="font-family:Verdana;">Conyza</span></i><span style="font-family:Verdana;"> <i>canadensis</i></span><span style="font-family:Verdana;"> (Canada fleabane, horseweed or </span><span style="font-family:Verdana;">marestail</span><span style="font-family:Verdana;">) </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">to evaluate glyphosate (900 g ae ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) plus </span><span style="font-family:Verdana;">saflufenacil</span><span style="font-family:Verdana;"> (25 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">), 2,4-D ester (500 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) or paraquat (1100 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) applied </span><span style="font-family:Verdana;">preplant</span><span style="font-family:Verdana;"> (PP) as 2-way </span><span style="font-family:Verdana;">tankmixes</span><span style="font-family:Verdana;">, or in 3-way </span><span style="font-family:Verdana;">tankmixes</span><span style="font-family:Verdana;"> with sulfentrazone (140 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">), flumioxazin (107 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">) or metribuzin (400 g ai ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">)</span><span><span style="font-family:Verdana;"> for the glyphosate-resistant (GR) </span><i><span style="font-family:Verda
