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
Mechanical Hedging in Apples
WSU’s Karen Lewis shares an update on mechanical hedging in apples.
Cherry Calcium Management Update
In Dr Wang’s recent study he found that the previous recommendation of three calcium applications did not increase concentrations of calcium in the fruit. Six…
Calcium Recommendations for Apples
Calcium management is critical to control bitter pit, especially for susceptible varieties. Good management should always be systems-based starting with adequate supplies in the soil,…
Trechnites – Know the Good Guys in your Pear Orchard this Spring
As part of a Pear IPM project we are tracking natural enemies in pear orchards and we wanted to share who is active with you.…
Featured Event
Drone Data Analytics in Agriculture Workshop-2
May 24, 2018
This one-day workshop will cover basics of photogrammetry, best practices in UAS imagery data collection, theory and hands-on training on data analytic methods while analyzing actual agricultural data (case studies).
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.
