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Weeds

Photo: Lynn Ketchum (Cropped from original)

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Displaying 1 - 10 of 135 resources

Tansy a big problem, can cinnabar larvae come to the rescue?

Q: I would like to obtain cinnabar larvae to help rid my animal pasture of tansy. How/where can I find a source?

A: View answer | View all featured questions

Mechanical Weed Control for Under the Vine

Dr. Marcelo Moretti, Assistant Professor of Weed Science in the Department of Horticulture at Oregon State University, provides a summary of research evaluating different implements for under-vine weed control in vineyards.

Jul 2021 | Online resource

Plants that produce dermatitis, photosensitivity and liver damage

This very informative PowerPoint presentation has descriptions and photographs of weeds, toxic properties, and livestock.

Bryan L. Stegelmeier | May 2021 | Online resource Peer reviewed (Gray level)

2021 PNW Weed Management Handbook

This comprehensive guide to weed management in the Pacific Northwest covers biological weed control agents; pesticide safety and disposal; agrichemicals and their properties; and control of problem weeds. Sections include subjects such ...

Ed Peachey | Apr 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Integrated Management of Prickly Lettuce in Wheat Production Systems

Prickly lettuce is a common weed in wheat production systems throughout the PNW, but it’s difficult to manage. Herbicides can control prickly lettuce in wheat, but many biotypes have developed resistance. An integrated management ...

Feb 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Vegetable Degree-day Models: An Introduction for Farmers and Gardeners

Degree-days measure the amount of heat accumulated over time. Researchers have used years of this data to develop models that help farmers and gardeners predict harvest dates and other important events in select crops and weeds....

Nick Andrews, Leonard Coop, Heather Stoven, Heidi Noordijk, Aaron Heinrich | Jan 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Best Management Practices for Managing Herbicide Resistance

Learn to manage herbicide-resistant weeds on your farm using the most effective methods, also known as best management practices (BMPs).

Judit Barroso | Dec 2020 | OSU Extension Catalog Peer reviewed (Orange level)

Biological control of weeds

Biological control is a form of weed control that uses a living agent to control weeds. A bio control agent can be insects, fungus, or grazing animals. A good bio control "bug" never completely destroys its plant host, but...

Shelby Filley | Sep 2020 | Article

Onion Response to Talinor Herbicide - A Virtual Field Tour

A Malheur Experiment Station virtual field tour. Weed Scientist Joel Felix discusses a field trial evaluating the herbicide Talinor for use in onions.

Christy Tanner | Aug 2020 | Video Peer reviewed (Gray level)

Roll up your sleeves: Use multiple strategies to control invasive weeds

Keeping weeds at bay can be frustrating, but it can be done.

Kym Pokorny | Aug 14, 2020 | News story