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
Pear psylla damage comparable in conventional and IPM orchards across the first three years using IPM
Wenatchee Valley pear orchards in their third year of following IPM guidelines experienced similar pear psylla damage as conventional orchards in 2024.
STAR Conservation Survey
Help us by sharing your insights! We are surveying experts and practitioners (i.e., farmers, researchers, agronomists, etc.) to learn more about the tree fruit conservation…
Effective Strategies for Managing Bacterial Canker During Fall
Bacterial canker in sweet cherries is caused by the bacterium Pseudomonas syringae pv. syringae (PSS) van Hall (Romoli, 1963, Latorre et al., 1980). This pathogen…
Recommended Harvest Criteria for Commercial WA-38 Storage in 2024
Use this guide in addition to the published marketing and quality standards for the 2024 crop year. First ship date for fruit produced in the…
Mesonet Expansion
We’re thrilled to announce that we have rounded the NW corner of the Olympic Mountains with the addition of a new Mesonet weather station in…
Save the Dates North Central Washington Tree Fruit Days January 21-23 in Wenatchee, Feb 6 in Omak
Join us for WSU Tree Fruit Extension Programs in North Central Washington on January 21,22,23, and February 6, 2025. Co-sponsored by Northwest Cherries, Pear Bureau…
Upcoming Events
21
Jan
Jan
Pear Day – North Central Washington Tree Fruit Days – 2025
Wenatchee Convention Center
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Featured Videos
Forecasting Station Specific Weather
This presentation is an example of how good quality, local weather data can be used in abiotic stress models for both present and forecasted weather.
Weather Sensing: Adding Private Stations to AWN
AgWeatherNet hosts numerous public weather stations. But reaching every farm and location is challenging. Therefore, many growers have opted for private weather stations. Watch the experts at AWN give expert advice on the proper hardware…
Lacewing and Aphid Scouting
An instructional video describing methods for scouting for aphids and lacewings in apple orchards. This video was produced by Tianna DuPont, WSU Extension and Rebecca Schmidt-Jeffris, USDA-ARS as part of SARE Project SW24-004: Developing best…
Private Network Participation – the Hardware and Software
Presented by Field Meteorologist, Contezac Hill and Sean Hill, Applications Systems Analyst/Developer
WSU Weather School: Soil Moisture Sensors
A presentation by R. Troy Peters, PHD, PE, Professor/Extension Irrigation Engineer, WSU Prosser
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…
