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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

Smartphone Applications to Assist with Weed Identification

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Smart phone apps may help you identify your problem weeds. Correct identification is critical to choosing the most effective herbicide.

Cherry Powdery Mildew – Questions and Answers from 2017

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After a tough year in 2017 lets look at the answers to common questions about cherry powdery mildew answered by WSU plant pathologist Dr. Gary…

WA 38 / Cosmic Crisp ® Pruning Demonstrations Scheduled Dec 13 and 14

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Dr. Stefano Musacchi will conduct pruning demonstrations at both the WSU Sunrise block in Rock Island and the WSU Roza block in Prosser. WSU Sunrise…

Next Generation Tree Fruit Network Event: Labor and H2A

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Dan Fazio WAFLA will share costs, logistics, paperwork and to do lists for H2A. Followed by round table discussion, networking and dinner.

Join WSU Extension for 2018 Winter Tree Fruit Programing in Central Washington

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Tree fruit producers and industry professionals are invited to WSU Tree Fruit Extension Programs in Central Washington on January 12, 15, 16, 17, 18, and…

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Featured Event

2018 Apple Hort. & Postharvest Research Review

The 2018 Apple Horticulture and Postharvest Research Review will be held January 24, 2018, at the Holiday Inn Express in Pasco. The meeting agenda can be viewed here: 2018 Apple_Agenda.pdf Research review talks are scheduled for…

Upcoming Events


2018 Apple Hort. & Postharvest Research Review

Holiday Inn Express Pasco-TriCities
Event Details


2018 Apple Crop Protection Research Review

Holiday Inn Express Pasco-TriCities
Event Details


Columbia Basin Tree Fruit Club

Cousins Restaurant
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

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….

WTFRC Apple Pesticide Residue Report

The WTFRC Internal Program recently completed their 2016 Pesticide Residue Study featuring 13 insecticide/acaricides and 7 fungicides commonly used in Washington apple orchards, including their first assessment of novaluron (Rimon) residues.

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