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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

2023 WA Tree Fruit Research Commission Grant Awards for Technology

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In December of 2022, the WA Tree Fruit Research Commission approved $394,302 for five (5) new technology research projects for the upcoming year. All newly…

2023 WA Tree Fruit Research Commission Grant Awards for Cherry

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For 2023, the WA Tree Fruit Research Commission approved $307,326 to help fund seven (7) new projects. The Oregon Sweet Cherry Commission (OSCC) is co-funding…

The Complexities and Opportunities of Water Markets

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A key impact of climate change on water availability in the Columbia River Basin is a shift in the timing of water supply, as warmer…

The First Year of the Pear Psylla Phenology-based Management Program Exhibits IPM Success

The First Year of the Pear Psylla Phenology-based Management Program Exhibits IPM Success

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2022 was the first year of comparing WSU’s pear psylla IPM phenology program against conventional programs in commercial pear orchards. Compared with conventional orchards, IPM…

Updates on Evaluating Replant Strategies for X-disease Infected Orchards

Updates on Evaluating Replant Strategies for X-disease Infected Orchards

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OSU and WSU Faculty and Extension are evaluating removal and replant strategies for X-disease infected orchards.

Apple Orchard Microclimates

Apple Orchard Microclimates

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Find out how much weather conditions in your apple orchard differ from nearby open-field weather stations and what that means for orchard management.

NCW Tree Fruit Days January 17-19 in Wenatchee January 21 in Chelan, and February 7 in Omak

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Join us for North Central Washington Tree Fruit Days on January 17-19, 21 and February 7. Co-sponsored by WSU Extension, Northwest Cherries, Pear Bureau Northwest,…

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Upcoming Events

1
Feb

Next Gen Network: Technology for Next Generation Tree Fruit

Pybus Event Center
Event Details

7
Feb

Okanogan Horticultural Society Meeting

Okanogan County Agriplex
Event Details

14
Feb

Taking Soil Health Principles to Practice: SOIL CON 2023

online
Event Details

16
Feb

2023 NW Pear Research Review

Confluence Technology Center
Event Details

23
Feb

Fire Blight Fruit School: New Research from our National Team

Confluence Technology Center
Event Details

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Featured Videos

Understanding Carbon Footprint in Tree Fruit: Industry Panel

These video series correspond to an educational forum hosted by WSU Tree Fruit Extensio, Washington Soil Health Initiative (WaSHI) and the Washington Tree Fruit Research Commission (WTFRC). We bought in global, national, and regional expertise…

Proposing a system to measure carbon fluxes in apple orchards. Dr. Andrew Bierer

These video series correspond to an educational forum hosted by WSU Tree Fruit Extensio, Washington Soil Health Initiative (WaSHI) and the Washington Tree Fruit Research Commission (WTFRC). We bought in global, national, and regional expertise…

Carbon models for organic soil amendments. Dr. Ball.

These video series correspond to an educational forum hosted by WSU Tree Fruit Extensio, Washington Soil Health Initiative (WaSHI) and the Washington Tree Fruit Research Commission (WTFRC). We bought in global, national, and regional expertise…

Understanding the carbon footprint: Case studies in tree fruit. Dr. Arellano.

These video series correspond to an educational forum hosted by WSU Tree Fruit Extensio, Washington Soil Health Initiative (WaSHI) and the Washington Tree Fruit Research Commission (WTFRC). We bought in global, national, and regional expertise…

Cómo verificar si hay daños en la yema de la manzana en el árbol

¿Busca daños en los brotes de manzana? Observe cómo Bernardita Sallato, de la Universidad Estatal de Washington, muestra cómo cortar y evaluar rápidamente los capullos de manzana en el árbol e identificar los daños en…

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Recent Publications

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…

Photoselective Protective Netting Improves “Honeycrisp” Fruit Quality

Sara Serra et al. Dec 2020. High temperatures, wind, and excessive sunlight can negatively impact yield and fruit quality in semi-arid apple production regions. Netting was originally designed for hail protection, but it can modify…

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