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Hazelnut Pest and Beneficial Insects: An Identification Guide

With color photos and text, describes principal insect pests of hazelnuts (filberts) including life stages, symptoms of infestation, and techniques for sampling population levels. Also describes beneficial insects (generalist natural enemies) that can combat pest insects.

Vaughn Walton | Jun 2009 | 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)

White Campion or White Cockle

White campion, also known as white cockle, contaminates hay fields, roadsides, ditches, and fencerows because of its high rate of seed production and tolerance to many herbicides. This publication provides information ...

John Kugler, Robert (Bob) Parker | Apr 2006 | Extension Catalog publication Peer reviewed (Orange level)

Blueberry Gall Midge: A Possible New Pest in the Northwest

Discusses symptoms of blueberry gall midge infestation, biology and life cycle of the midge, monitoring, and potential for damage. Color photos and sampling instructions included.

Wei Qiang Yang | May 2005 | Extension Catalog publication Peer reviewed (Orange level)

Detecting and Controlling Eastern Filbert Blight

Learn the signs and symptoms of eastern filbert blight (Anisogramma anomala), from initial detection through death of tree branches.

Jay W. Pscheidt | May 1999 | Extension Catalog publication Peer reviewed (Orange level)