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
2025 WA Tree Fruit Research Commission Grant Awards for Technology
In December of 2024, the WA Tree Fruit Research Commission approved $342,631 for five (5) new technology research projects for the upcoming year.
Starting the Season off for Pear IPM Success
For growers intending to use selective IPM programs (limiting broad spectrum sprays) for pears this season here are a few considerations for success.
North Central Washington Tree Fruit Days 2025 Wrap Up
On January 19 to 23, 2025, the North Central Washington Tree Fruit Days took place in Wenatchee, WA, showcasing the newest research in tree fruit…
Cherry Cold Hardiness Model on AWN
Predicting hardiness levels of perennial fruit plants is essential for frost management. Because sweet cherry (Prunus avium) is among the earliest to initiate development in…
Agricultural Leadership Program
The Washington State Tree Fruit Association (WSTFA) and the Washington State Department of Agriculture (WSDA) will offer a bilingual (English, Spanish) Agricultural Leadership Program (ALP)…
Bring Beneficial Insects and Pollinators into your Farm
Participate in General Mills’ National Pollinator Habitat Initiative with Tree Top and get one-on-one consulting to support beneficial insects and pollinators on farm while maximizing…
Upcoming Events
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Featured Videos
Lacewing releases: Increasing your odds for success
Rebecca Schmidt Jeffris, USDA ARS covered updates on the best strategies for lacewing releases based on recent studies at North Central Washington Apple Day. Part of North Central Washington Tree Fruit Days sponsored by WSU…
New codling moth tools- NCW Tree Fruit Days 2025
Betsy Beers, WSU Entomology described efficacy information on new codling moth products at North Central Washington Apple Day. Part of North Central Washington Tree Fruit Days sponsored by WSU Extension, NW Cherry Growers, Pear Bureau…
Avoiding resistance in organic codling moth management- NCW Tree Fruit Days 2025
Tobin Northfield, WSU Entomology described the importance of rotating products and other strategies to slow virus resistance at North Central Washington Apple Day 2025. Part of North Central Washington Tree Fruit Days sponsored by WSU…
Codling moth management reminders – NCW Tree Fruit Days 2025
Dani Gray, WSU Extension described the importance of removing wild sources, mating disruption, coverage and cultural controls at North Central Washington Apple Day 2025. Part of North Central Washington Tree Fruit Days sponsored by WSU…
Optimizing tree fruit nutrition for fruit quality
Bernardita Sallato described the basics of nutrient demand and their impact on fruit quality, tools to determine rate, and a review of monitoring strategies at NCW Stone Fruit Day 2025. Part of North Central Washington…
Recent Publications
Evaluation of biopesticides for the control of Erwinia amylovora in Apple and Pear
In a recent study, we evaluated non-antibiotic materials for fire blight control in 8 Washington, 3 Oregon, 3 New York and 2 Pennsylvania field experiments conducted between 2013 to 2022.
Investigations of Multiple Approaches to Reduce Green Spot Incidence in ‘WA 38’ Apple
A pre-harvest apple (Malus × domestica Borkh.) disorder named “green spot” (GS) was recently identified on ‘WA 38’ apples. Previous work indicated a tentative association between GS and fruit mineral imbalance, and an influence of…
Soil Health Indicators for Central Washington Orchards
To help growers in Central Washington orchards, Washington State University scientists demonstrated that all soil health indicators should include measurements of water availability and root health in addition to standard fertility indicators to meet stakeholder…
Field scale application of Brassica seed meal and anaerobic soil disinfestation for the control of apple replant disease.
Study published June 2021 in Applied Soil Ecology shows potential of anaerobic soil disinfestation and biorenovation with mustard meals for mitigation of replant disease.
Towards rapid detection and mapping of powdery mildew in apple orchards
Chandel, Khot, Sallato Dec 2020. Powdery mildew (PM) in apples is a critical fungal disease that adversely affects yield and fruit quality. Conventional PM identification techniques are laborious. This study evaluated the suitability of non-destructive…
