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Consultant Perspectives on Weed Management Needs in Arkansas Cotton

Published online by Cambridge University Press:  20 January 2017

Jason K. Norsworthy ,
Kenneth L. Smith ,
Robert C. Scott  and
Edward E. Gbur
Jason K. Norsworthy*
Affiliation:
Department of Crop, Soils, and Environmental Sciences, 1366 West Altheimer Drive, Fayetteville, AR 72704
Kenneth L. Smith
Affiliation:
Department of Crop, Soils, and Environmental Sciences, 1366 West Altheimer Drive, Fayetteville, AR 72704
Robert C. Scott
Affiliation:
Department of Crop, Soils, and Environmental Sciences, 1366 West Altheimer Drive, Fayetteville, AR 72704
Edward E. Gbur
Affiliation:
Agricultural Statistics Laboratory, Fayetteville, AR 72701
*
Corresponding author's E-mail: jnorswor@uark.edu
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Abstract

Certified Crop Advisors of Arkansas and members of the Arkansas Crop Consultants Association were surveyed in Fall 2006 through direct mail to assess current weed management practices and needs in cotton from both a research and educational perspective. Consultants reported scouting 162,300 of the possible 473,700 ha of cotton grown in Arkansas. Collectively, glyphosate-resistant and enhanced glyphosate-resistant cultivars were reported grown on 98% of the cotton hectares. Ninety-five percent of the consultants believe the planting of enhanced glyphosate-resistant cultivars will increase over the next 5 yr. All consultants indicated a “moderate” to “high” level of concern with herbicide-resistant weeds in cotton, and 79% of the consultants suspect herbicide resistance in the fields they scout, predominately glyphosate-resistant horseweed. Horseweed, Palmer amaranth, and morningglories were the three most problematic weeds in cotton. A continued focus on resistant weed management was the most frequent research and educational request by consultants.

Keywords

Horseweed, Conyza canadensis (L.) Cronq. ERICAmorningglories, Ipomoea sppPalmer amaranth, Amaranthus palmeri S. Wats AMAPAcotton, Gossypium hirsutum L.Weed management survey
Type
Extention/Outreach
Information
Weed Technology , Volume 21 , Issue 3 , September 2007 , pp. 825 - 831
Copyright
Copyright © Weed Science Society of America 

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