Influence of planting date and herbicide program on Amaranthus palmeri control in dry bean

dc.contributor.authorBeiermann, Clint W.
dc.contributor.authorCreech, Cody F.
dc.contributor.authorKnezevic, Stevan Z.
dc.contributor.authorJhala, Amit J.
dc.contributor.authorHarveson, Robert
dc.contributor.authorLawrence, Nevin C.
dc.date.accessioned2022-10-19T18:51:56Z
dc.date.available2022-10-19T18:51:56Z
dc.date.issued2021-11
dc.description.abstractLate-emerging summer annual weeds are difficult to control in dry bean production fields. Dry bean is a poor competitor with weeds, due to its slow rate of growth and delayed canopy formation. Palmer amaranth is particularly difficult to control due to season-long emergence and resistance to acetolactate synthase (ALS)-inhibiting herbicides. Dry bean growers rely on PPI and preemergence residual herbicides for the foundation of their weed control programs; however, postemergence herbicides are often needed for season-long weed control. The objective of this experiment was to evaluate effect of planting date and herbicide program on late-season weed control in dry bean in western Nebraska. Field experiments were conducted in 2017 and 2018 near Scottsbluff, NE. The experiment was arranged in a split-plot design, with planting date and herbicide program as main-plot and subplot factors, respectively. Delayed planting was represented by a delay of 15 d after standard planting time. The treatments EPTC + ethalfluralin, EPTC + ethalfluralin followed by (fb) imazamox + bentazon, and pendimethalin + dimethenamid-P fb imazamox + bentazon, resulted in the lowest Palmer amaranth density at 3 wk after treatment and the highest dry bean yield. The imazamox + bentazon treatment provided poor Palmer amaranth control and did not consistently result in Palmer amaranth density and biomass reduction compared with the nontreated control. In 2018, the delayed planting treatment had reduced Palmer amaranth biomass with the pendimethalin + dimethenamid-P treatment, as compared with standard planting. Delaying planting did not reduce dry bean yield and had limited benefit in improving weed control in dry bean.en_US
dc.identifier.citationBeiermann CW, Creech CF, Knezevic SZ, Jhala AJ, Harveson R, Lawrence NC (2022) Influence of planting date and herbicide program on Amaranthus palmeri control in dry bean. Weed Technol. 36: 79–85. doi: 10.1017/wet.2021.96en_US
dc.identifier.issn0890-037X
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/17286
dc.language.isoen_USen_US
dc.publisherCambridge University Pressen_US
dc.rightscc-byen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subjectcrop yielden_US
dc.subjectlate plantingen_US
dc.subjectpre-plant incorporateden_US
dc.subjectresidual herbicidesen_US
dc.subjectweed controlen_US
dc.subjectweed densityen_US
dc.titleInfluence of planting date and herbicide program on Amaranthus palmeri control in dry beanen_US
dc.typeArticleen_US
mus.citation.extentfirstpage1en_US
mus.citation.extentlastpage7en_US
mus.citation.issue1en_US
mus.citation.journaltitleWeed Technologyen_US
mus.citation.volume36en_US
mus.identifier.doi10.1017/wet.2021.96en_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.departmentResearch Centers.en_US
mus.relation.universityMontana State University - Bozemanen_US

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