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Tree Fruit

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. Learn more about tree fruit research and extension at WSU.

Recent News

Washington Tree Fruit Research Commission Hires Special Projects Coordinator

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Rob Curtiss began work as Special Projects Coordinator at the Washington Tree Fruit Research Commission (WTFRC) on February 20. Mr. Curtiss has a M.S. degree…

Job Opportunity in Musacchi Program

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The Musacchi Program is looking to hire a full-time Research Assistant. 

WSU 2018 Tree Fruit Crop Protection Guide Now Available

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The 2018 Tree Fruit Crop Protection Guide is now available. The digital version is available at Many updates (more than 90) have been made…

Apply Mating Disruption for Codling Moth

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Mating disruption dispensers should be in place before the start of bloom.

Full Bloom Dates for Red Delicious Apples

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The date of full bloom at the WSU Tree Fruit Research and Extension Center is used as a relative comparison of one year to another. The…

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Featured Event

WSU Postharvest Fruit School

The 2018 Post-harvest Fruit School is an excellent opportunity for warehouse and other professionals in the tree fruit and berry industries to deepen and develop their knowledge of post-harvest science and management with lectures, expert…

Upcoming Events


WSU Postharvest Fruit School

Event Details


Irrigation Water Management Workshop – Spanish

Pine Grove Grange
Event Details


Irrigation Water Management Workshop – Spanish

Pine Grove Grange
Event Details

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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.

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Latest Newsletter


Recent Publications

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.

Achieving sustainable cultivation of apples

Drawing on an international range of expertise, this collection focuses on ways of improving the cultivation of apples as a food crop at each step in the value chain, from breeding through to post-harvest storage….

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