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Showing 91 - 100 of 103 results.

Potassium deficiency: Listening to your ears of corn

Potassium is an essential nutrient in corn production. If deficient, growth is stunted and yields are reduced. Potassium deficiency will manifest differently as the season progresses. Here's what to look for.

Sam Angima | Dec 2009 | Article

Growing Hazelnuts in the Pacific Northwest: Plant Propagation

This publication provides guidelines for purchasing and propagating planting stock. It describes simple layering, tie-off layering, grafting, and cuttings.

Jeff L. Olsen, David Smith | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Sustainable Hazelnut Production: Filbertworm Control by Mating Disruption

Filbertworm is the insect pest of greatest economic importance in Oregon hazelnut production. This publication explains how to Implement mating disruption as a strategy that will reduce damage caused by filbertworm ...

Betsey Miller, Daniel Dalton, Linda Brewer, Vaughn Walton | May 2018 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Training and Pruning

This publication describes practices for pruning young hazelnut trees and mature orchards.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Introduction

This publication gives a brief introduction to hazelnuts, which are sometimes called filberts. It provides an overview of hazelnut history, growth and production, geographic distribution, and hazelnut industry organizations.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Growing Hazelnuts in the Pacific Northwest: Varieties

This publication includes tables that summarize characteristics of the main hazelnut varieties produced in the United States, lists varieties' susceptibility to eastern filbert blight, and shows varieties' compatibility with each other for pollination.

Jeff L. Olsen, Shawn Mehlenbacher, Rebecca L. McCluskey, David Smith | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Pacific NW native plants by plant community

Useful information about Western Hemlock-Douglas Fir Forest, Prairie, Scrub-Shrub Wetlands, and Mixed Deciduous Forest/Steep Dry Slope.

Jun 2014 | Article

Growing Hazelnuts in the Pacific Northwest: Pollination and Nut Development

This publication provides a glossary of botanical terms related to hazelnut pollination and describes the flower and nut development process, pollination, and related issues.

Jeff L. Olsen | Nov 2013 | Extension Catalog publication Peer reviewed (Orange level)

Identification of Invasive and Reemerging Pests on Hazelnuts

Describes key identification features, life cycle, and pest status of filbertworm, filbert weevil, filbert aphid, and hazelnut aphid. Includes color photos.

Vaughn Walton, Ute Chambers, Amy J. Dreves, Denny Bruck, Jeff L. Olsen | Dec 2007 | Extension Catalog publication Peer reviewed (Orange level)

2023 Hazelnut Pest Management Guide for the Willamette Valley

Learn how to control insects, weeds and disease during each stage of hazelnut growth. View the app version View diseases, pests and products by crop stage on a web-based app. Try the app

Nik Wiman, Jay W. Pscheidt, Marcelo Moretti | Apr 2023 | Extension Catalog publication Peer reviewed (Orange level)