Skip to main content Skip to navigation

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.

screenshot of Fruit Matters

Fruit Matters – Tree Fruit News May 2024

Find info for spring and managing heat in this issue of Fruit Matters.

Recent News

Robotic System for Precision Blossom Thinning in Apples

Published on
Researchers at Washington State University have designed a robotic blossom thinning system, achieving promising results for targeted flower removal.

Broadleaf Weed Management a Component of Integrated X-disease Management

Broadleaf Weed Management a Component of Integrated X-disease Management

Published on
Manage broadleaf weeds in cherry orchards to help reduce the risk of X-disease phytoplasma.

Manage Root Suckers – a Component of Integrated X-disease Management

Published on
Root suckers provide easily accessible feeding sites for leafhopper vectors. Root suckers also tend to have higher levels of phytoplasma earlier in the season, likely…

WSU Decision Aid System Update May 2024

WSU Decision Aid System Update May 2024

Published on
Codling moth updates begin!

AgWeatherNet (AWN) Update

AgWeatherNet (AWN) Update

Published on
This month, AgWeatherNet (AWN) is highlighting our heat stress management tools as we prepare for warming temperatures.

Corina Serban Re-joins WSU Tree Fruit Extension Team

Published on
We are excited to welcome Corina Serban as the Little Cherry Disease (LCD) Information and Technology Transfer (ITT) Tree Fruit Extension Educator within the Washington…

Pruning out Fire Blight Infections

Published on
It is important to quickly prune out fire blight infected materials soon after an infection occurs to reduce the bacterial ooze which insects and wind…

More News

Upcoming Events


Food Microbiology 101 for the Fresh Produce Industry Training – May

WSU – IAREC, Prosser
Event Details


Columbia Basin Tree Fruit Club

Country Gentleman
Event Details


Fire Blight Field Visit

WSU Columbia View Orchard
Event Details


2024 Virtual Orchard Meetups – Water Wisdom: Navigating Tree Fruit Production Through Drought and Deluge

Zoom Webinar
Event Details


WA 64 Spring Field Tour South Central Washington

WSU-Prosser Roza Orchard
Event Details

More Events


Get Connected

NewslettersSubscribe to Newsletter

Featured Videos

video thumbnail

AgWeatherNet Web Portal

AWN portal use presentation by Sean Hill, Application Systems Analyst, WSU AgWeatherNet
Ag Weather Net video title page screenshot, Technical Update on Washington's' Weather Network

Technical Update for AWN

A presentation by Jonathan Contezac, Field Meteorologist at AWN Mount Vernon
title slide

AWN Overview

An overview of the WSU AgWeatherNet. AWN collects and delivers high quality, site-specific weather data and products for effective agricultural decision-support, serving irrigated agriculture in central Washington and the rest of the state (farmers, gardeners,…
thumbnail of video title slide

Managing Mites in Pears

Rebecca Schmidt Jeffris discussed spider mites, rust mites, and blister mites: how different active ingredients work, efficacy, pesticide effects on natural enemies, weed associations and pesticide impacts on outbreaks at NCW Tree Fruit Days. NCW…
microscopic view of powdery mildew

Powdery Mildew Best Management

Gary Grove, WSU Plant Pathology spoke at 2024 NCW Tree Fruit Days on powdery mildew management. Topics covered include: management starts with pruning; irrigation starts the infection cycle; importance of suckering; importance of timing products…

More Videos

Recent Publications

figure showing releative efficacy of non antibiotic materials.

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…
image shows a tractor pulling a rototiller attachment making individual tilled rows.

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…

More Publications

Washington State University