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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.

Recent News

The Washington Tree Fruit Research Commission (WTFRC) Apple Technology Roadmap 2024-2026

Published on
The Washington Tree Fruit Research Commission (WTFRC), founded in 1969, represents tree fruit producers in Washington state, including apple, cherry, and stone fruit growers and…

Cross-compatibility of apple cultivars and pollinizers

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S allele compatability for apple and pollenizers.

2024 Washington Tree Fruit Research Commission Grant Awards for Cherry

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Date: January 2024 Authors: Paige Beuhler and Ines Hanrahan For 2024, the Washington Tree Fruit Research Commission (WTFRC) approved $230,561 to help fund six (6)…

PACMAN SCRI 2024 Conference Videos Posted

PACMAN SCRI 2024 Conference Videos Posted

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The PACMAN SCRI project has posted a video playlist from their January Developers Conference for Precision Crop Load Management of Apples.

Upcoming Food Microbiology 101 for the Fresh Produce Industry Training

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Washington State University is organizing two in-person Food Microbiology 101 For the Fresh Produce Industry Training.

A Pre-bloom Pear Psylla Management Program, 2024

A Pre-bloom Pear Psylla Management Program, 2024

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An outline of current guidelines and evidence for effective pear pest management.

WTRFC Project Synopsis: Decision Support Tool for Precision Orchard Management

WTRFC Project Synopsis: Decision Support Tool for Precision Orchard Management

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A project addressing individual tree nutrition requirements through a combination of automated sensing, machine learning algorithms, decision support tools, and variable rate technology.

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Upcoming Events

29
Feb

Weather with AgWeatherNet (AWN) – Spring Frost Forecast Program

Zoom Webinar
Event Details

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Featured Videos

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Meteorology Basics

A 25-minute crash course/Weather 101 answering basic questions about how weather works in the atmosphere.

Tree Fruit Days 2024: Codling Moth Mating Disruption

Don Thomson spoke on codling moth mating disruption at the 2024 NCW Tree Fruit Days. He described the importance of point sources, weather impacts on risk and the potential for resistance. NCW Tree Fruit Days…

Tree Fruit Days 2024: New Products and Approaches for Codling Moth Management

Betsy Beers, WSU Entomology spoke at the 2024 NCW Tree Fruit Days on codling moth management. She described factors influencing trap catch and two years of new product efficacy data. NCW Tree Fruit Days is…
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Pruning WA 38 with Andres Romero (English captions)

Bernardita Sallato, Washington State University Extension specialist, interviews Andrés ‘Andy’ Romero, Olsen Brothers, to learn about their strategies to prune WA 38.
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Pruning basics with Bernardita Sallato (English subtitles)

Bernardita Sallato, Washington State University Extension specialist, discusses fruiting and vegetative buds during a video on pruning strategies she produced in English and Spanish in partnership with Good Fruit Grower.

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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…

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