Tree Fruit Research and Extension
WSU Tree Fruit Research and Extension develops and applies research-based information for sustainable tree fruit production in Washington and the world.
Recent News
Apple Sunburn 101
Even though conditions have been relatively moderate most of this spring, the long, hot days of summer are coming. It is time for apple growers…
Deraeocoris bug – Know the Good Guys in your Pear Orchard
The Deraeocoris bug (Deraeocoris brevis) or ‘derry’ is a common predator in Pacific Northwest orchards. The adult is active in spring long before most predators…
Sampling and Testing for Little Cherry Virus
Directions for how to sample and mail little cherry virus samples for testing.
Pear Psylla – Summer Generations Overview and Management
In most regions of Washington, the first generation of pear psylla nymphs have completed development, giving way to the first round of summerform adults. When…
Featured Event
Columbia Basin Tree Fruit Club – field day
Jun 28, 2018
The June meeting will be a field day at the Roza research farm in Prosser. We will have several stops, including: Sweet Cherry Breeding program with Per McCord, WSU Stone Fruit Breeder Discuss mildew research with…
Upcoming Events
2017 Impact Report: Tree Fruit Endowment Advisory Committee (pdf)
Featured Videos
The Soil is Alive
A diverse abundant soil food web cycles water and nutrients, suppresses plant pathogens and helps buffer plant stress. Feed the soil food web to improve plant health. Animated video by Tianna DuPont, WSU Extension and…
Mike Willett talks about CM
Mike Willett talks about how pests threaten our crops, like Washington’s iconic apples. See how Washington’s apple growers are using integrated pest management to reduce pesticide use in our apple orchards.
Life on a Leaf
Description of mites that can be found on apple leaves. Video taken with a dissecting microscope 10x-70x.
Recent Publications
Recent Trends in Certified Organic Tree Fruit in Washington State: 2017
The following slide set presents the current data on organic tree fruit area and production for Washington State, with some associated global and national data. Data come from various sources including certifiers, the World of…
Anthracnose Canker Management Plan for Commercial Apple Orchards in Western Washington
Information for managing anthracnose canker, a major disease limiting apple production in western Washington, western British Columbia, and the Columbia Gorge.
Superficial Scald Risk Assessment Assay for Apples
Step-by-step guide to an assay to quantify risk of superficial scald development. This assay could have benefits for organic fruit—where scald-mitigating treatments and limited—and for conventional fruit where the effectiveness of scald-mitigating treatments can be…
New WPS Respiratory Protection Guide
The Pesticide Education Research Collaborative is happy to announce a new resource, “Worker Protection Standard (WPS) Respiratory Protection Guide: Requirements for Employers of Pesticide Handlers”, a 45-page guide to help employers of pesticide handlers meet…
WA 38 Characteristics & Horticulture Factsheet
Here we will cover growth habit, establishment considerations, training systems, pruning techniques, crop load management, fruit type and fruit quality.
