Search OSU Extension

Showing 71 - 80 of 157 results.

Forest Health Fact Sheet: Diseases and Insect Pests of Pacific Madrone

Discusses three major types of madrone diseases--foliage, branch dieback and trunk canker, and root--and ways to minimize and manage. Discusses insect pests of madrone: fall webworm, western tent caterpillar, aphids, and leaf miners. Color photos. Sources of further information.

Max Bennett, David C. Shaw | May 2008 | Extension Catalog publication 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 ...

David C. Shaw | Jun 2007 | Extension Catalog publication Peer reviewed (Orange level)

Managing Powdery Mildew in Hop: Best Practices

Powdery mildew is difficult to manage in hop. Growers must work to prevent infection, plant resistant varieties, monitor the plants and act swiftly if the disease is detected. For best results, use a combination ...

David H. Gent, Briana Claassen, Michele Wiseman, Luisa Santamaria | Oct 2019 | Extension Catalog publication Peer reviewed (Orange level)

How to collect a plant specimen for disease diagnosis

A guide for how to collect and where to get a sample analyzed for plant diseases.

Melodie Putnam, Carol Savonen | Jul 2014 | Article

Mummy Berry Management in the Pacific Northwest

Mummy berry disease is prevalent throughout the Pacific Northwest, west of the Cascade Mountain Range, and affects the northern highbush blueberry industry. Growers often underestimate the potential damage of ...

Jade Florence, Jay W. Pscheidt | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Predicting and Managing Gray Mold Rot of Pear in Oregon

This publication describes gray mold disease symptoms and the disease cycle and outlines a model that can help pear packers predict the relative risk of gray mold development in stored fruit before the fruit is placed in cold storage.

Robert A. Spotts, Steve Castagnoli | Jan 2010 | Extension Catalog publication Peer reviewed (Orange level)

Revenue Sources for a Commercial Beekeeping Operation in the Pacific Northwest

Pollination services and honey production are the primary revenue sources for a beekeeping business based in the Pacific Northwest. Those starting a beekeeping operation should focus on two to three revenue sources ...

Ellen Topitzhofer, Carolyn Breece, Dan Wyns, Ramesh Sagili | May 2020 | Extension Catalog publication Peer reviewed (Orange level)

Volunteer's discovery adds to knowledge of rare Oregon bee species

The small stonecrop mason bee (Hoplitis emarginata) had never been found in Oregon until 2019 when it was discovered by Master Melittologist Judi Maxwell in the Siskiyou Mountains in southern Oregon. Only one person had seen it...

Lincoln Best, Andony Melathopoulos | Nov 2021 | Article

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)