Cumulative herbicide stress in corn and soybean

dc.contributor.advisorSikkema, P.H.
dc.contributor.advisorRobinson, D.E.
dc.contributor.authorBrown, Lynette Rae
dc.date.accessioned2020-08-24T15:47:31Z
dc.date.available2020-08-24T15:47:31Z
dc.date.copyright2008
dc.degree.departmentDepartment of Plant Agricultureen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractTwenty-four field experiments were conducted between 2005-2007 in Ontario and the United States to evaluate the effects of simulated drift followed by registered in-crop herbicides on corn and soybean. In corn, simulated glyphosate drift (200 g ai/ha) resulted in visual injury and a decrease in height, dry weight, stand count and yield. Simulated glyphosate drift followed by in-crop herbicides resulted in an additive response for all variables analyzed. In soybean, as the rate of simulated mesotrione or dicamba/diflufenzopyr drift increased, injury increased and dry weight, height and yield decreased. Simulated mesotrione drift followed by bentazon resulted in negative synergistic responses in respect to injury and additive responses in respect to yield. In contrast, antagonistic responses were observed when imazethapyr or glyphosate plus chlorimuron-ethyl were applied after simulated mesotrione drift. A negative synergistic yield response was observed with simulated dicamba/diflufenzopyr drift followed by chlorimuron-ethyl but not when followed by either imazethapyr or bentazon.en_US
dc.identifier.urihttps://hdl.handle.net/10214/20121
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectCornen_US
dc.subjectSoybeanen_US
dc.subjectHerbicide stressen_US
dc.subjectSimulated driften_US
dc.subjectYielden_US
dc.titleCumulative herbicide stress in corn and soybeanen_US
dc.typeThesisen_US

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