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Northern Giant Hornet: A Potential Threat to Honeybee Colonies in Oregon

The northern giant hornet was detected in British Columbia and Washington in 2019. This publication outlines the identification, life cycle, and predatory habits of the northern giant hornet (Vespa mandarinia) for ...

Ellen Topitzhofer, Chris Hedstrom, Priyadarshini Chakrabarti Basu, Andony Melathopoulos, Silvia I. Rondon, Gail Langellotto, Ramesh Sagili | Sep 2022 | Extension Catalog publication Peer reviewed (Orange level)

Cereal Cyst Nematodes

Cereal cyst nematodes reduce yields of wheat, barley, and oats in the Pacific Northwest states of Idaho, Oregon, and Washington. It is estimated that these pests reduce wheat profitability in these states by at ...

Richard Smiley | Apr 2020 | Extension Catalog publication Peer reviewed (Orange level)

Root-lesion nematodes: Biology and management in Pacific Northwest wheat cropping systems

Nematodes are tiny but complex unsegmented roundworms that are anatomically differentiated for feeding, digestion, locomotion, and reproduction. These small animals make important contributions to organic matter decomposition ...

Richard Smiley | Sep 2019 | Extension Catalog publication Peer reviewed (Orange level)

Wireworms: A Pest of Monumental Proportions

An overview of identifying, monitoring, and managing wireworms.

Silvia I. Rondon, Amber Vinchesi, Arash Rashed, David Crowder | Jul 2017 | Extension Catalog publication 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, ...

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

Biology and Management of the Potato Tuberworm in the Pacific Northwest

Discusses the status of the potato tuberworm in the Pacific Northwest, explains the pest's life cycle, and includes color photos for identification. Suggests strategies for monitoring and control, including cultural and chemical control methods.

Silvia I. Rondon, Sandy DeBano, George Clough, Phil Hamm, Andrew Jensen, Alan Schreiber, Juan M. Alvarez, Michael Thornton, James Barbour, Mahmut Dogramaci | Apr 2007 | Extension Catalog publication Peer reviewed (Orange level)

Winter Grain Mite: A Fall and Winter Pest of Cereals and Grasses in Oregon

Describes winter grain mite (Penthaleus major), a pest of grass and cereal crops in the Pacific Northwest: its appearance, hosts, and life history and how to scout for and control the pest.

Brian Tuck, Mylen Bohle, Amy J. Dreves, Glenn Fisher | Mar 2009 | Extension Catalog publication Peer reviewed (Orange level)

Leaf-Feeding Sawflies in Wheat

Documents 2003 wheat sawfly outbreak in Oregon. Provides growers and field consultants with educational information needed for decision making on fly control. Includes photos.

Mary Corp, Glenn Fisher | Oct 2003 | Extension Catalog publication Peer reviewed (Orange level)

Armyworms in Grass Pastures and Corn in Western Oregon

Discusses identification, life cycle, monitoring, action thresholds, biological control, organic controls, and chemical controls. Includes color photos for identification.

Amy Peters, Glenn Fisher | Nov 2006 | Extension Catalog publication Peer reviewed (Orange level)

Winter Cutworm: A New Pest Threat in Oregon

Damage from winter cutworm (the common name for the larval stage of the large yellow underwing moth) is a growing concern. In 2015, large numbers of larvae were observed around homes, within golf courses, and ...

Jessica Green, Amy J. Dreves, Brian McDonald, Ed Peachey | Feb 2016 | Extension Catalog publication Peer reviewed (Orange level)