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Potential Yield Loss in Dry Bean Crops Due to Weeds in the United States and Canada

Published online by Cambridge University Press:  24 January 2018

Nader Soltani*
Affiliation:
Adjunct Professor, Department of Plant Agriculture, University of Guelph Ridgetown Campus, Ridgetown, ON, Canada
J. Anita Dille
Affiliation:
Professor, Department of Agronomy, Kansas State University, Manhattan, KS, USA
Robert H. Gulden
Affiliation:
Associate Professor, Department of Plant Science, University of Manitoba, MB, Canada
Christy L. Sprague
Affiliation:
Professor, Department of Plant and Soil Science, University of Michigan, East Lansing, MI, USA
Richard K. Zollinger
Affiliation:
Professor, Department of Plant Science, North Dakota State University, Fargo, ND, USA
Don W. Morishita
Affiliation:
Professor, Department of Plant Sciences, University of Idaho, Kimberly, ID, USA
Nevin C. Lawrence
Affiliation:
Assistant Professor, Department of Agronomy and Horticulture, University of Nebraska–Lincoln, Scottsbluff, NE, USA
Gustavo M. Sbatella
Affiliation:
Assistant Professor, Department of Plant Sciences, University of Wyoming, Laramie, WY, USA
Andrew R. Kniss
Affiliation:
Associate Professor, Department of Plant Sciences, University of Wyoming, Laramie, WY, USA
Prashant Jha
Affiliation:
Associate Professor, Southern Agricultural Research Center, Montana State University, Huntley, MT, USA
Peter H. Sikkema
Affiliation:
Professor, Department of Plant Agriculture, University of Guelph Ridgetown Campus, Ridgetown, ON, Canada
*
Author for correspondence: Nader Soltani, Adjunct Professor, Department of Plant Agriculture, University of Guelph Ridgetown Campus, Ridgetown, ON N0P 2C0, Canada. (E-mail: soltanin@uoguelph.ca)

Abstract

Earlier reports have summarized crop yield losses throughout various North American regions if weeds were left uncontrolled. Offered here is a report from the current WSSA Weed Loss Committee on potential yield losses due to weeds based on data collected from various regions of the United States and Canada. Dry bean yield loss estimates were made by comparing dry bean yield in the weedy control with plots that had >95% weed control from research studies conducted in dry bean growing regions of the United States and Canada over a 10-year period (2007 to 2016). Results from these field studies showed that dry bean growers in Idaho, Michigan, Montana, Nebraska, North Dakota, South Dakota, Wyoming, Ontario, and Manitoba would potentially lose an average of 50%, 31%, 36%, 59%, 94%, 31%, 71%, 56%, and 71% of their dry bean yield, respectively. This equates to a monetary loss of US $36, 40, 6, 56, 421, 2, 18, 44, and 44 million, respectively, if the best agronomic practices are used without any weed management tactics. Based on 2016 census data, at an average yield loss of 71.4% for North America due to uncontrolled weeds, dry bean production in the United States and Canada would be reduced by 941,000,000 and 184,000,000 kg, valued at approximately US $622 and US $100 million, respectively. This study documents the dramatic yield and monetary losses in dry beans due to weed interference and the importance of continued funding for weed management research to minimize dry bean yield losses.

Type
Education/Extension
Copyright
© Weed Science Society of America, 2018 

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