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Grower Acceptance of Economic Thresholds for Weed Management in Illinois

Published online by Cambridge University Press:  12 June 2017

George F. Czapar ,
Marc P. Curry  and
Loyd M. Wax
George F. Czapar
Affiliation:
University of Illinois, Springfield Extension Center, P.O. Box 8199, Springfield, IE 62791
Marc P. Curry
Affiliation:
University of Illinois, Springfield Extension Center, P.O. Box 8199, Springfield, IE 62791
Loyd M. Wax
Affiliation:
U.S. Department of Agriculture, Agricultural Research Service, Crop Science Department, University of Illinois, 1102 South Goodwin Avenue, Urbana, IL 61801
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Abstract

Although economic thresholds are often used to make insect control decisions, the use of thresholds for weed management has been limited. Surveys of growers, agricultural chemical dealers, and farm managers/rural appraisers helped identify limitations to grower acceptance of economic thresholds for weed management. Most growers were concerned about harvest problems due to weeds, with 64% identifying this factor as a major limitation. Landlord perception and weed seed production were identified by 38% of the growers as major limitations, while 36% of the growers listed general appearance of the field as reasons. In contrast, 75% of the agricultural chemical dealers and 63% of the farm managers surveyed listed field appearance as a major reason limiting grower acceptance of economic thresholds for weed management. Since grower concerns involve risk management and future profitability, economic weed thresholds that address long-term costs and benefits of weed control decisions may be more fully accepted.

Keywords

Economic thresholdsintegrated pest managementEOT, economic optimum thresholdIPM, integrated pest management
Type
Education/Extension/Survey
Information
Weed Technology , Volume 11 , Issue 4 , December 1997 , pp. 828 - 831
Copyright
Copyright © 1997 by the Weed Science Society of America 

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