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Problem Thistles of Oregon

Describes thistles identified as problems. Includes color photos.

Ken French, Larry C. Burrill, Tim Butler | Jul 2021 | Extension Catalog publication Peer reviewed (Orange level)

Identification and Control of Knapweed Species in Central and Eastern Oregon

This publication describes potential hazards, management, and identification of knapweeds.

Amy Jo Detweiler | Feb 2003 | Extension Catalog publication Peer reviewed (Orange level)

Puncturevine Patrol

Discusses identification (with color photos), prevention, control, and eradication. Contains herbicide recommendations. Gives information on how to report infestations of puncturevine.

Ed Peachey | May 2006 | Extension Catalog publication Peer reviewed (Orange level)

The Economic Impact of Onion Pests in the Treasure Valley

A look at pest data for onions grown in the Treasure Valley demonstrates the yield and economic impacts of specific pests and management practices. This data can help researchers, crop consultants and those ...

Katie Murray, Isaac Sandlin, Peter Ellsworth, Paul Jepson, Al Fournier, Hang-Kwang Luh, Stuart Reitz | Mar 2022 | Extension Catalog publication 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 ...

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