Pest & Disease Management

New Posting

National Worker Protection Standard: A Manual for Trainers of Agricultural Workers and Pesticide Handlers
The Pesticide Educational Resources Collaborative (PERC) & the US Environmental Protection Agency (EPA); 2016

Featured Publications

bacterial canker of sweet cherry in oregon

Bacterial Canker of Sweet Cherry in Oregon: Disease Symptoms, Cycle and Management
R.A. Spotts, J.L. Olsen, L.E. Long & J.W. Pscheidt
EM 9007; Reviewed July 2014

Bacterial canker is the number one killer of young sweet cherry trees in Oregon. This publication covers cause and symptoms, disease cycle, and diseast manangement.

2018 Pest Management Guide

2018 Pest Management Guide for Tree Fruits in the Mid-Columbia Area - Hood River - The Dalles - White Salmon
EM 8203; Revised January 2017

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 programs for nutrients; 2) dilutions table for wettable powder and liquid products; 3) natural enemy impact guide for tree fruit pesticides; 4) illustrated bud development chart and associated stages for apples, pears, peaches, apricots, cherries, and plums; 5) reentry levels for common pesticides; and 6) application rates for chemical thinning and growth regulator sprays.

Spotted Wing Drosophila


A Detailed Guide for Testing Fruit for the Presence of Spotted Wing Drosophila (SWD) Larvae
A. Dreves, A. Cave & J. Lee
EM 9096; October 2014

A Quick 7-Step Guide for Detecting SWD Larvae in Fruit
A. Dreves, A. Cave & J. Lee
EM 9097; October 2014


Integrated Pest Management for SWD (website)

Chemical Control Resources for SWD (website)

ID & Biology:

Identifcation of SWD (website)

Recognize Fruit Damage from SWD
EM 9021; December 2010

Information provided by the SWD Specialty Crop Research Initiative. Find more information at their website:

Other SWD Resources:

Spotted Wing Drosophila Counts in Wasco County
Updated 7/14/2016

Spotted Wing Drosophila Management Guide in Oregon Sweet Cherry
P.W. Shearer, L. Long & S. Castignoli; Oregon State University; 2010
See the Powerpoint Presentation here

Spotted Wing Drosophila Control Recommendations
R.A. Van Steenwick; University of California, Berkeley; 2010

A New Pest Attacking Healthy Ripening Fruit in Oregon
EM 8991; October 2009

Bacterial Canker

Bacterial Canker PowerPoint Presentation
B. Spotts & K. Wallis; March 2010

Bacterial Canker of Sweet Cherry in Oregon
R.A. Spotts, J.L Olsen, L.E. Long & J.W. Pscheidt
EM 9007; Reviewed 2014

P. Syringuae Bacterial Canker PowerPoint Presentation

Bacterial Canker Management
L.E. Long; October 2002

Other Resources

Pre-emergence Herbicides for Weed Control in Tree Fruit
Lynn Sosnoskie; September 25, 2017
WSU Weed Science & WSU Tree Fruit

Western X and Cherry Viruses
Tianna DuPont; April 2017
Information from Dr. Ken Eastwell, Plant Health Specialties; summarized by Tianna DuPont, WSU Tree Fruit Extension

Environmental Factors Affecting Mite Populations
G. Fisher & L.E. Long

Thrips on Cherries
H. Reidl

Reducing Bird Damage
L.E. Long; May 2002

Cytospora Canker
L.E. Long

Protecting Trees in Winter

Controlling Powdery Mildew with Horticultural Mineral Oil
L.E. Long

Monitoring Obliquebanded Leafroller in Sweet Cherry Orchards
L.E. Long, M. Omeg & A. Knight
Pamphlet written for Wasco County growers based on research and scouting efforts in the 1990s. 

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