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United States Department of Agriculture

Agricultural Research Service

Title: Guide to Help Producers Manage Weed Resistance

Authors
item Anderson, Randal
item Thill, D - UNIV OF IDAHO
item Rauch, T - UNIV OF IDAHO
item Hanson, B - UNIV OF IDAHO
item Ball, D - OREGON STATE UNIV
item Ensminger, M - SYNGENTA
item Howalt, K - NORTH DAKOTA STATE UNIV
item Seefeldt, Steven
item Corp, M - OREGON STATE UNIV
item Harbour, J - DUPONT

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: March 16, 2004
Publication Date: May 10, 2004
Citation: Anderson, R.L., Thill, D., Rauch, T., Hanson, B., Ball, D., Ensminger, M., Howalt, K., Seefeldt, S.S., Corp, M., Harbour, J. 2004. Guide to help producers manage weed resistance. Western Society of Weed Science Annual Meeting, March 8-11, 2004, Colorado Springs, CO. 56:89.

Technical Abstract: The number of weeds resistant to herbicides continues to increase, leading to higher input costs with crop production. A goal of the WSWS Herbicide Resistant Plants Committee is to help producers understand factors influencing weed resistance and plan management strategies that minimize selection pressure. To achieve this goal, we first developed two fact sheets that explain management concepts based on population ecology. One fact sheet summarized the impact of herbicide use frequency on rate of resistance development, whereas a second fact sheet described impact of crop rotations on population dynamics of a resistant species. The fact sheets explain principles that will be useful in planning management strategies, and are designed to help scientists with technology transfer to producers. Scientists and producers can access the fact sheet on the WSWS Web page (www.wsweedscience.org). A research team at the University of Idaho also developed an extension bulletin that summarizes soil persistence of herbicides used in winter wheat in the Pacific Northwest. The bulletin describes factors affecting herbicide persistence, then lists herbicides by mode of action and plantback restrictions. The bulletin's purpose is to help producers plan weed management across several years rather than only within a single cropping season.

Last Modified: 9/10/2014
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