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Field Guide for Diagnosing Common Wheat Maladies of the Pacific Northwest

This field guide provides an overview of basic plant pathology concepts that are relevant to disease identification in wheat. It introduces tools to help distinguish between biotic and abiotic injuries, and discusses patterns of ...

Christina Hagerty, Richard Smiley | Aug 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Corn Smuts

Two types of smut attack corn in the Pacific Northwest: common smut and head smut. This publication provides descriptions of symptoms and the disease cycle, and management strategies (which differ considerably between the two ...

George Clough | Jul 2021 | OSU Extension Catalog Peer reviewed (Orange level)

What's Wrong with my Potato Tubers? Diagnosing Tuber Abnormalities in Western Oregon and Washington

Describes and illustrates (color photos) tuber damage caused by insect pests, plant diseases, and physiological disorders.

Nick Andrews, Alexandra Stone | Jul 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Forest Health Fact Sheet: Sudden Oak Death (Phytophthora ramorum)

Gives basic facts about a serious plant disease called Sudden Oak Death, caused by the pathogen Phytophthora ramorum. Describes risk of disease to forest health and to commercial nursery industry. Shows disease symptoms on various...

Dave Shaw | Jul 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Detecting and Controlling Eastern Filbert Blight

This brochure summarizes the history of the spread of eastern filbert blight (Anisogramma anomala) from the eastern United States to the Pacific Northwest. Details its life cycle, and the symptoms and signs of infection from ...

Jay Pscheidt | Jul 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Grape Phylloxera: Biology and Management in the Pacific Northwest

Describes the life cycle and injury symptoms of grape phylloxera, Daktulosphaira vitifoliae (Fitch), an aphidlike insect that feeds on grape roots. Discusses strategies for reducing the risk of phylloxera infestation, how to sample ...

Patricia Skinkis, Vaughn Walton, Clive Kaiser | Jul 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Scouting for Grape Powdery Mildew

This publication provides vineyard owners with approaches for finding the first occurrence of grape powdery mildew. The publication covers tactics to manage powdery mildew, including use of fungicides and canopy management. It also ...

Jay Pscheidt | Apr 2021 | OSU Extension Catalog Peer reviewed (Orange level)

Potato Psyllid Vector of Zebra Chip Disease in the Pacific Northwest

This publication addresses the emergent issue in the Pacific Northwest of a potato infection called zebra chip disease, vectored by the potato psyllid. Includes information on the bacterium, the biology of the vector, description ...

Silvia I. Rondon, Darrin Walenta, Stuart Reitz | Apr 2021 | OSU Extension Catalog Peer reviewed (Orange level)