Report on 2023 Weed Control Studies Is Available


Drew Lyon and Ian Burke, WSU weed scientists, conduct numerous field studies to evaluate new herbicides, and new uses of older herbicides, to manage weeds of concern to dryland farmers in eastern Washington. Their research is partially funded by the Washington Grain Commission, Washington Oilseeds Commission, WSDA Washington State Commission on Pesticide Registration, Otto and Doris Amen Dryland Research Endowment, The Washington Turfgrass Seed Commission, USDA-ARS Organic Research Extension Initiative, and the Pacific Northwest Farmer’s Cooperative. Private agricultural chemical companies also partially support some of the research. These studies are summarized in the annual 2023 WSU Weed Control Report.

The 2023 report summarizes 19 field studies conducted across eastern Washington in winter wheat, spring wheat, pulse crops, chemical fallow, spring canola, Kentucky bluegrass, and winter wheat cropping systems. The report also includes the precipitation records for Pullman and Davenport, Washington.

Weeds investigated include:

Annual reports dating back to 2013 are also available.

Drew Lyon.

For questions or comments, contact Drew Lyon via email at or phone at 509-335-2961.