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
USDA Organic Materials Comment Period Now Open
Pear Ester-based mating disruption and other materials important to organic tree fruit are open for public comment this month to the USDA National Organic Standards…
Industry Day at CAMA 2025 International Conference in Wenatchee
CAMA 2025 is scheduled for May 18-22, 2025, at the Wenatchee Convention Center, and will cover key topics related to Controlled Atmosphere (CA) and Modified Atmosphere Packaging (MAP)…
WSU Decision Aid System Update April 2025
DAS April 2025 Updates
AWN Smart Farms: Private Sensing Networks for Site-Specific Orchard Management
WSU AgWeatherNet has enhanced its ecosystem to seamlessly integrate and support private sensing networks, enabling the realization of AWN Smart Farms/Orchards. This advancement empowers individual…
Metamitron: a new thinning agent for WA apples and pears
Chemical thinning can be tricky, even when you have a lot of experience with a given product. Here are some things we have learned in…
Using Insect Growth Regulators as a Tool in Pear IPM
Insect growth regulators can be used as a tool as part of a pear IPM.
Upcoming Events
22
May
May
Industry Day at CAMA 2025 International Conference in Wenatchee
Wenatchee Convention Center
Get Connected
Featured Videos
Surface mulches to buffer environmental stress in tree fruit
Kirsten Hannam, Agriculture & Agri-Food Canada, Summerland, BC presented at the 2025 Soil Con: Soil Health Workshop for Tree Fruit February 27, 2025. Thank you to funding and sponsorship from the Soil Health Initiative, WSDA,…
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…
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…
