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dc.contributor.authorKumar, Vipan
dc.contributor.authorJha, Prashant
dc.date.accessioned2015-09-03T16:53:52Z
dc.date.available2015-09-03T16:53:52Z
dc.date.issued2015-05
dc.identifier.citationKumar, Vipan, and Prashant Jha. "Influence of herbicides applied postharvest in wheat stubble on control, fecundity, and progeny fitness of Kochia scoparia in the US Great Plains." Crop Protection 71 (May 2015): 144-149. DOI:https://dx.doi.org/10.1016/j.cropro.2015.02.016.en_US
dc.identifier.issn0261-2194
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/9235
dc.description.abstractField, greenhouse, and laboratory experiments were conducted at the Montana State University Southern Agricultural Research Center, Huntley, MT, USA, in 2012 and 2013, to evaluate the effectiveness of various postharvest-applied herbicides on late-season control, fecundity, seed viability, and progeny fitness of Kochia scoparia (kochia) in wheat stubble. Paraquat + atrazine, paraquat + linuron, and paraquat + metribuzin applied at the early bloom stage were the most effective postharvest treatments for late-season control (100%) at 28 d after treatment (DAT), biomass reduction (70–73%), and seed prevention of K. scoparia, and did not differ from glyphosate, glufosinate, saflufenacil + 2, 4-D, saflufenacil + atrazine, tembotrione + atrazine, or topramezone + atrazine treatments. Dicamba alone, dicamba + 2, 4-D, or diflufenzopyr + dicamba + 2, 4-D applied at the early bloom stage were ineffective, with <70% late-season control, <45% biomass reduction, and <55% seed reduction of K. scoparia. In the absence of a postharvest herbicide, uncontrolled kochia plants at a density of 8–10 plants m−2 contributed >100,000 seeds m−2. Addition of atrazine to dicamba improved late-season control (80%) and seed reduction (78%) compared to dicamba alone, and reduced seed viability and 100-seed weight. There was no significant effect of any of the dicamba-containing herbicides applied at the early bloom stage on K. scoparia progeny fitness, including height, width, primary branches, and shoot dry weight of seedlings at 42 d after planting (DAP). The effective postharvest-applied herbicides investigated in this research should be utilized to prevent late-season K. scoparia seed bank replenishment in wheat, and as a component of herbicide resistance management program for the containment of glyphosate- and/or acetolactate synthase (ALS)-inhibitor-resistant K. scoparia in wheat-based crop rotations in the US Great Plains.en_US
dc.description.sponsorshipMonsanto Company; Montana Wheat and Barley Committeeen_US
dc.titleInfluence of herbicides applied postharvest in wheat stubble on control, fecundity, and progeny fitness of Kochia scoparia in the US Great Plainsen_US
dc.typeArticleen_US
mus.citation.extentfirstpage144en_US
mus.citation.extentlastpage149en_US
mus.citation.journaltitleCrop Protectionen_US
mus.citation.volume71en_US
mus.identifier.categoryLife Sciences & Earth Sciencesen_US
mus.identifier.doi10.1016/j.cropro.2015.02.016en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentResearch Centers.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupSouthern Ag Research Center.
mus.contributor.orcidKumar, Vipan|0000-0002-8301-5878en_US


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