North Willamette Research and Extension Center News

Judy Kowalski

Related Content from OSU Extension

Christmas Tree Nutrient Management Guide for Western Oregon and Washington

OSU Extension Catalog

A comprehensive guide to fertilization and nutrient management in Christmas tree fields. Discusses tree nutrient use at various stages in the crop cycle and explains how to use soil and tissue testing to determine fertilizer needs. Presents a long-term nutrient management approach that will ensure...

By Brad Withrow-Robinson, Chal Landgren, Michael Bondi

Protecting Garden Fruits from Spotted Wing Drosophila

OSU Extension Catalog

This publication describes what home and community gardeners can do to monitor and responsibly manage spotted wing drosophila in their tree fruits and berries.

By Gail Langellotto

Propagating Shrubs, Vines, and Trees from Stem Cuttings

OSU Extension Catalog

Adding more greenery to your home landscape? Tired of buying so many trees and shrubs to do it? A possible alternative is to use stem cuttings from your current trees and shrubs to make more, a method known as asexual propagation. Designed for homeowners in the Pacific Northwest, this publication...

Blueberry Cultivars for the Pacific Northwest

OSU Extension Catalog

This publication describes blueberry cultivars, including northern highbush, southern highbush, rabbiteye, lowbush, and half-high types. It includes information on commercial value and identifies which cultivars work well for home gardens.

By Bernadine Strik

Scouting for Grape Powdery Mildew

OSU Extension Catalog

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 discusses effective scouting techniques based on the key...

By Jay Pscheidt

Yamhill Hazelnut (OSU 542.102)

OSU Extension Catalog

Describes characteristics of 'Yamhill', a new hazelnut cultivar released by Oregon State University.

2019 Pest Management Guide for Tree Fruits in the Mid-Columbia Area

OSU Extension Catalog

Presents pesticide and herbicide application rates and recommendations, by tree growth stage, for pests that infect fruit trees. Covers apples, pears, and cherries. Provides (1) spray program for nutrients; (2) dilutions table for wettable powder and liquid products; (3) natural enemy impact guide...

By Dalila Rendon, Jay Pscheidt, Achala KC, Rick Hilton

Apple Scab

OSU Extension Catalog

Apple scab is a significant problem in the climate of the Pacific Northwest. This publication discusses the symptoms of the disease and the pathogen and disease cycle. Recommends controls and spray timings. Rates susceptibility and resistance to scab of some apple and flowering crabapple cultivars.

Organic Management of Flea Beetles

OSU Extension Catalog

Flea beetles are common garden pests found throughout the Pacific Northwest. Flea beetle feeding on plants in the Brassicaceae and Solanaceae families can scar foliage and potato tubers, leading to reduced marketable yields and potential total crop loss. This publication introduces growers to...

Consideration and Resources for Vineyard Establishment in the Inland Pacific Northwest

OSU Extension Catalog

This guide is primarily designed to address factors and critical questions that potential owners need to consider before establishing a new vineyard in eastern Washington, eastern Oregon, or western Idaho.

By Patricia Skinkis, Clive Kaiser

Standards for Bird Control in Vineyards

Fact Sheet

Birds can feed on ripening grape berries near harvest. Learn how to protect your grapes in a safe and legal manner. Provided by the Oregon Wine Growers Association and Willamette Valley Wineries.

Researchers determine pollen abundance and diversity in five major pollinator-dependent crops

News Story

Aug 28, 2019

A new study provides valuable insights into pollen abundance and diversity available to honeybee colonies employed in five major pollinator-dependent crops in Oregon and California.

By Chris Branam

Training and Pruning Your Home Orchard

OSU Extension Catalog

Provides general rules for training, pruning, and limb bending, and explains open-center, central-leader, and espalier training. Outlines specific guidelines for training and pruning apple, pear, sweet cherry, sour cherry, peach, prune, plum, apricot, fig, persimmon, walnut, hazelnut, and chestnut...

Stone Wall Strawberries

Article

In the winter, Mt. Fuji is covered in white snow. It looks beautiful from a distance, especially from the Kuno mountain region in the Sizuoka Prefecture. Among the many other attractions of this area...

By Dr. Toshihiko Nishio, Shinji Kawai, translator and editor, Alice Formiga, editor

Noncrop Host Plants of Spotted Wing Drosophila in North America

OSU Extension Catalog

Landscapes surrounding fruit production fields often include hedgerows, adjacent field margins, and woody or riparian areas with ornamentals, unmanaged shrubs, vines, or other plants that also produce fruits. Noncrop habitats can meet the requirements that favor Spotted Wing Drosophila (SWD) adults...

By Linda Brewer