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northwest weed and seed foundation

A recent article in the journal Weed Science explores whether such harvest-time controls would be effective against downy brome, Italian ryegrass, feral rye and rattail fescue – weeds that compete with winter wheat in the Pacific Northwest. Researchers set out to determine whether the four retained a significant number of seeds at harvest time and whether those seeds were high enough on the plant to be captured.

WESTMINSTER, Colorado – March 02, 2021 – Herbicide-resistant weeds have fueled a growing demand for effective, nonchemical weed controls. Among the techniques used are chaff carts, impact mills and other harvest-time practices that remove or destroy weed seeds instead of leaving them on the field to sprout.

“We found that the efficacy of harvest-time weed controls in winter wheat varies by weed species and is dependent on the environment and growing conditions,” says Carolina San Martín, Ph.D., of Oregon State University. “It is also clear that when harvest-time controls are used, growers should harvest as soon as possible after crop maturity to capture as many of the remaining weed seeds as possible.”

IMAGE: Collection of feral rye (Secale cereale), rattail fescue (Vulpia myuros), and downy brome (Bromus tectorum) in a winter wheat field near Pilot Rock, Oregon before the feral rye and rattail. view more

Credit: Photo taken by Judit Barroso on May 24, 2016.

Weed Science is a journal of the Weed Science Society of America, a nonprofit scientific society focused on weeds and their impact on the environment. The publication presents peer-reviewed original research related to all aspects of weed science, including the biology, ecology, physiology, management and control of weeds. To learn more, visit http://www. wssa. net.

About Weed Science

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