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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.

Recent News

Canker Removal Now is Critical for Fire Blight Management this Year

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No one wants fire blight in their orchard this spring. For fire blight to take off in your orchard this year three things need to be…

Cherry Institute Orchard Systems Tour

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On 17 January 2019, WSU faculty Matthew Whiting and Bernardita Sallato organized an orchard systems tour in conjunction with the annual Cherry Institute meeting.  This…

Learn why the Douglas County Voluntary Stewardship Program Helps You Avoid Additional Regulations

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The Voluntary Stewardship Program (VSP) provides a non-regulatory, incentive-based method of critical area protection on lands that intersect agricultural activities. VSP is an alternative to…


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The FDA has released draft guidance for farms which must comply with the Produce Safety Rule (Standards for the Growing, Harvesting, Packing and Holding of…

Are you spraying enough? Preliminary results from WSU-Prosser IAREC.

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Industry standards to apply fungicides might not be enough for Powdery mildew control in sweet cherry.

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Featured Event

2019 NW Pear Research Review

Feb 21, 2019
The 2019 NW Pear Research Review is scheduled for February 21, 2018, at the Columbia Gorge Hotel, Hood River.  The Review is free and open to the public; there is no registration required.  The agenda…

Upcoming Events


2019 NW Pear Research Review

Columbia Gorge Hotel
Event Details


Healthy Soils Workshop

Pendleton Convention Center
Event Details


Cherry Fruit School

Event Details

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2018 Impact Report: Tree Fruit Endowment Advisory Committee (pdf)

Featured Videos

WA 38 Fruit Quality Update 2019

Dr. Ines Hanrahan, Executive Director for the WA Tree Fruit Research Commission, presents information about WA 38 fruit quality studies including recent results and future plans. This presentation was part of the 2019 Apple Day…

WA 38 Horticulture Update 2019

Dr. Stefano Musacchi, Endowed Chair of Tree Fruit Physiology & Management at WSU, discusses the most recent information about the best horticultural practices for WA 38 apple trees and updates on related research. There is…

Northwest Profiles: Cosmic Crisp® (New Washington State Apple)

Bred from the marriage of two apples, and over 20years in the making…a once in a generation pome is destined to make a huge splash in the apple industry. Dubbed the Cosmic Crisp®, this apple…

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Latest Newsletter

Newsletter Archive

Recent Publications

Protective Netting Improves Leaf-level Photosynthetic Light Use Efficiency in ‘Honeycrisp’ Apple Under Heat Stress

G Mupambi, S Musacchi, S Serra, L Kalcsits, D Layne, and T Schmidt. 2018. HortScience 53(10): 1416-1422. DOI: 10.21273/HORTSCI13096-18

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…

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