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U.S. Farmer Awareness of Glyphosate-Resistant Weeds and Resistance Management Strategies

Published online by Cambridge University Press:  20 January 2017

William G. Johnson ,
Micheal D. K. Owen ,
Greg R. Kruger ,
Bryan G. Young ,
David R. Shaw ,
Robert G. Wilson ,
John W. Wilcut ,
David L. Jordan  and
Stephen C. Weller
William G. Johnson
Affiliation:
Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907
Micheal D. K. Owen*
Affiliation:
Department of Agronomy, Iowa State University, Ames, IA 50011
Greg R. Kruger
Affiliation:
Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907
Bryan G. Young
Affiliation:
Department of Plant, Soil, and Agricultural Systems, Southern Illinois University, Carbondale, IL 62901
David R. Shaw
Affiliation:
GeoResources Institute, Mississippi State University, Mississippi State, MS 39762
Robert G. Wilson
Affiliation:
Department of Agronomy and Horticulture, University of Nebraska, Scottsbluff, NE 69361
John W. Wilcut
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695 (John W. Wilcut deceased)
David L. Jordan
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695 (John W. Wilcut deceased)
Stephen C. Weller
Affiliation:
Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907
*
Corresponding author's E-mail: mdowen@iastate.edu.
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Abstract

A survey of farmers from six U.S. states (Indiana, Illinois, Iowa, Nebraska, Mississippi, and North Carolina) was conducted to assess the farmers' views on glyphosate-resistant (GR) weeds and tactics used to prevent or manage GR weed populations in genetically engineered (GE) GR crops. Only 30% of farmers thought GR weeds were a serious issue. Few farmers thought field tillage and/or using a non-GR crop in rotation with GR crops would be an effective strategy. Most farmers did not recognize the role that the recurrent use of an herbicide plays in evolution of resistance. A substantial number of farmers underestimated the potential for GR weed populations to evolve in an agroecosystem dominated by glyphosate as the weed control tactic. These results indicate there are major challenges that the agriculture and weed science communities must face to implement long-term sustainable GE GR-based cropping systems within the agroecosystem.

Keywords

GlyphosateGenetically engineered cropsglyphosate-resistant cropsherbicide resistanceperceptionssurveys
Type
Education/Extension
Information
Weed Technology , Volume 23 , Issue 2 , June 2009 , pp. 308 - 312
Copyright
Copyright © Weed Science Society of America 

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