Effect of Halosulfuron Rate and Application Timing on Volunteer Azuki Bean Control in White Bean  

作　　者：Nader Soltani Lynette R. Brown Peter H. Sikkema Nader Soltani;Lynette R. Brown;Peter H. Sikkema(University of Guelph Ridgetown Campus, Ridgetown, Canada)

机构地区：[1]University of Guelph Ridgetown Campus, Ridgetown, Canada

出　　处：《Agricultural Sciences》2020年第8期715-721,共7页农业科学（英文）

摘　　要：Three field experiments were carried out during 2017-2019 at the University of Guelph Huron Research Station near Exeter, Ontario, Canada to determine the effect of halosulfuron rate (25, 37.5 or 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1) and application timing (POST 1, POST 2 and POST 3) on volunteer azuki bean control in white bean. At POST 1, halosulfuron at 25, 37.5 and 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 controlled volunteer azuki bean 46% - 50% at 1 week after application (WAA), controlled decreased to 16% - 25% at 8 WAA. At POST 2, volunteer azuki bean controlled decreased from 34% - 39% at 1 WAA to 17% - 27% at 8 WAA. A similar trend was observed at POST 3. Halosulfuron applied POST 1 at 25, 37.5 and 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 reduced biomass 49%, 64% and 69%, respectively. Halosulfuron applied POST 2 did not reduce volunteer azuki bean biomass at 25 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1, but decreased biomass 51% at 37.5 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 and 49% at 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1. Similarly, halosulfuron applied POST 3 diThree field experiments were carried out during 2017-2019 at the University of Guelph Huron Research Station near Exeter, Ontario, Canada to determine the effect of halosulfuron rate (25, 37.5 or 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1) and application timing (POST 1, POST 2 and POST 3) on volunteer azuki bean control in white bean. At POST 1, halosulfuron at 25, 37.5 and 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 controlled volunteer azuki bean 46% - 50% at 1 week after application (WAA), controlled decreased to 16% - 25% at 8 WAA. At POST 2, volunteer azuki bean controlled decreased from 34% - 39% at 1 WAA to 17% - 27% at 8 WAA. A similar trend was observed at POST 3. Halosulfuron applied POST 1 at 25, 37.5 and 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 reduced biomass 49%, 64% and 69%, respectively. Halosulfuron applied POST 2 did not reduce volunteer azuki bean biomass at 25 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1, but decreased biomass 51% at 37.5 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1 and 49% at 50 g<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ai<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>ha^-1. Similarly, halosulfuron applied POST 3 di

关 键 词：Azuki Bean Biomass Aboveground Dry Weight Dockage Injury Weed Control White Bean Phaseolus vulgaris Vigna angularis 

分 类 号：O17[理学—数学]