Darrin Walenta

Billbug Species Complex in Grass Seed Production Systems of Oregon: Characteristics, Impact and Management Options

Billbugs are pests you may see in turf grasses or in grass seed production. Learn the characteristics of billbug feeding damage, their impact on grass seed crops and effective management strategies.

Navneet Kaur, Nicole Anderson, Darrin Walenta, Brian Donovan, Alison Willette, John Spring, Claira Goracke, Jeremiah Dung | May 2024 | OSU Extension Catalog

Western yellow-striped armyworm: Biology and management basics

The western yellow-striped armyworm can damage forage and grass seed crops from late May to mid-September. Producers can take precautions to mitigate the impact of the pest.

Will Price, Darrin Walenta, Seth J. Dorman | Jan 2024 | OSU Extension Catalog

Integrated Pest Management Guidelines and Biocontrol of Cereal Leaf Beetle in the Pacific Northwest

For years, a small wasp has helped control the cereal leaf beetle, a pest of grass and cereal grains. But now beetle numbers are climbing. Here are some options to reduce this pest's impact on crops.

Darrin Walenta, Navneet Kaur, Nicole Anderson, Seth Dorman, Alison Willette, Claira Goracke, Sanford Eigenbrode, Brian Charlton | Jan 2024 | OSU Extension Catalog

Increasing the reach of integrated pest management through community partnerships

This publication summarizes the learner-centered education methods and community outcomes of three Extension partnerships. These projects increased the use of integrated pest management and pesticide risk reduction practices...

Mary Halbleib, Cassie Bouska, Gordon B. Jones, Darrin Walenta | Mar 2026 | OSU Extension Catalog

Measuring the Economic Impact of Pests and Pest Management on Oregon Peppermint

This summary demonstrates the yield and economic impacts of pests and pest management practices on the 2018 crop of Oregon peppermint. Researchers, Extension workers and crop consultants will benefit from this ...

Katie Murray, Isaac Sandlin, Paul Jepson, Darrin Walenta, Peter Ellsworth, Al Fournier, Hans Luh | Jun 2023 | OSU Extension Catalog

Integrated pest management strategic plan for Oregon, Washington and Idaho mint crops

Growers, researchers and industry experts created this IPM plan for PNW mint, outlining pest priorities and practices using the PAMS framework to improve sustainability and pest control strategies.

Katie Murray, Darrin Walenta, Paul Jepson, Isaac Sandlin | Nov 2024 | OSU Extension Catalog

Potato psyllid vector of zebra chip disease in the Pacific Northwest

Zebra chip disease is a potato infection emergent in the Pacific Northwest. Learn about the bacterium, the biology of the potato psyllid vector, the damage it causes and management techniques.

Silvia I. Rondon, Alan Schreiber, Phil Hamm, Nora Olsen, Erik Wenninger, Carrie Wohleb, Tim Waters, Rodney Cooper, Darrin Walenta, Stuart Reitz | Jun 2023 | OSU Extension Catalog

Irrigated Kentucky bluegrass (Eastern Oregon) nutrient management guide

Ensure the health of your Kentucky bluegrass with this guide on essential soil nutrients. Understand the impact of soil nutrients on growth and the best practices for effective nutrient application.

Richard P. Affeldt, Darrin Walenta, John M. Hart, Donald A. Horneck, Gary Kiemnec | May 2024 | OSU Extension Catalog