Weed Control Reports

Drew Lyon and Ian Burke, WSU weed scientists located in Pullman, 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 state and regional commodity commissions such as the Washington Grain Commission, Washington Oilseeds Commission, Washington Turfgrass Seed Commission, and the USA Dry Pea and Lentil Council. Private agricultural chemical companies also partially support some of the research. These studies are summarized in the annual WSU Weed Control Reports.

View the entire 2023 Weed Control Report (pdf)

Cropping Systems

Winter Wheat

Spring Wheat

Pulse Crops (Chickpeas, Lentils, Dry Peas)

Spring Canola

Kentucky Bluegrass

Chemical Fallow

Precipitation Data

Statistical Inference

View the entire 2022 Weed Control Report (pdf)

Cropping Systems

Winter Wheat

Spring Wheat

Chickpeas

Spring Canola

Kentucky Bluegrass

Chemical Fallow

Winter Wheat

Spring Wheat

Chemical Fallow

Winter Peas

Spring Canola

Weed Seed Bank Management

Precipitation Data

View the entire 2021 WSU Weed Control Report (pdf).

View the full 2020 Weed Control Report (pdf).

Harvest Weed Seed Control

Winter Wheat

Spring Wheat

Chemical Fallow

Chickpeas

Fall-sown Peas

Precipitation Data

Winter Wheat

Spring Wheat

Chemical Fallow

Chickpeas

Fall-sown Peas

Grass Seed

Conservation Reserve Program (CRP)

Cropping Systems

Precipitation Records for Davenport and Pullman: Sept 2018 – Aug 2019 (pdf)

View the entire 2019 Weed Control Report (pdf).

Winter Wheat

Spring Wheat

Chemical Fallow

Chickpeas

Dry Peas

Fall-sown Peas

Lentils

Precipitation Records for Davenport and Pullman: Sept 2017 – Aug 2018 (pdf)

View the entire 2018 Weed Control Report (pdf).

Winter Wheat

Spring Wheat

Chemical Fallow

Grassland Management

Potato Management

Chickpeas

Canola

View the entire 2017 WSU Weed Control Report (pdf).

Winter Wheat

Spring Wheat

Chemical Fallow

Grassland Management

Alfalfa Management

Chickpeas

Dry Peas

View the entire 2016 WSU Weed Control Report (pdf).

Chickpea

Herbicide Carryover Trials

Spring Wheat

Winter Wheat

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