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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

Stakeholders are invited to participate in WSU Endowed Chair in Bacterial Pathogens of Tree Fruits interviews March 1st, March 8th and March 15th.

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Stakeholders are invited to participate in seminars and stakeholder sessions as we interview three great candidates for the position of Endowed Chair in Bacterial Pathogens…

WSU Decision Aid System Available for Registration

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The 2021 field season is upon us, and the WSU Decision Aid System (DAS) team is ready to work with stakeholders to provide time-sensitive information…

NW Pear Research Review

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Please join us for the NW Pear Research Review on February 17, 2021, held virtually from 8:40 – Noon. The meeting is free and open…

Novel project utilizing microbial bio-inoculants to promote plant growth and resilience

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Professor Sharon Doty’s laboratory at the University of Washington developed microbial bio-inoculants from native trees in natural ecosystems in Washington State that promote plant growth…

2021 Codling Moth Survey

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Codling moth has been the key pest of pome fruits across the growing regions of Washington and Oregon for over a hundred years.  Over that…

WSU Tree Fruit Days Webinar Recordings

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Recordings of the following webinars are available at treefruit.wsu.edu/videos These webinars were part of the 2021 Tree Fruit Days Webinar Series co-sponsored by WSU Extension,…

Evaluating IPM Methods to Control Apple Replant Disease

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Preliminary results from a trial comparing field scale application of brassica seed meal and anaerobic soil dis-infestation for control of replant disease.

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Featured

2021 Codling Moth Survey

Codling moth has been the key pest of pome fruits across the growing regions of Washington and Oregon for over a hundred years.  Over that time, pest management programs regularly evolved as key pesticides were…

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Upcoming Events

1
Mar

Endowed Chair in Bacterial Pathogens of Tree Fruit Interview 1 Seminar

Event Details

1
Mar

Endowed Chair in Bacterial Pathogens of Tree Fruits – Stakeholder Input Session 1

Event Details

3
Mar

Meeting Regarding Potential Apple Maggot Quarantine for Okanogan County Set for March 3 @ 1:30 to 3pm

Event Details

8
Mar

Endowed Chair in Bacterial Pathogens of Tree Fruit Interview 2 Seminar

Event Details

8
Mar

Endowed Chair in Bacterial Pathogens of Tree Fruits interviews – Stakeholder session 2

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Featured Videos

Sweet Cherry Powdery Mildew Updates by Dr. Grove

Dr. Gary Grove presents an update on sweet cherry powdery mildew with an introduction of the disease, epidemiology, and current situation regarding pesticide resistance in Washington State.

Q&A with Dr. Gary Grover on Sweet Cherry Powdery Mildew

Questions and answers between the growers and industry members and Dr. Gary Grove addressing the current state of pesticide resistance in Washington State.

2021 WSU Review of Cosmic Crisp® C.v. WA 38 Planting Trends and Rootstock

Part 1 of 5 from the WA 38/Cosmic Crisp® 2020/2021 season updates webinar. In this video, Kevin Brandt (PVM) talks about planting trends and rootstocks, including number of trees planted and projected numbers, rootstocks used,…

Cosmic Crisp® Marketing Program for the 2020/2021 Season

Part 2 of 5 from the WA 38/Cosmic Crisp® 2020/2021 season updates webinar. In this video, Kathryn Grandy (PVM) covers the current information on the marketing program and strategies for 2021. There is a Q&A…

Overview of 2020 WA 38 Crop Season

Part 3 of 5 from the WA 38/Cosmic Crisp® 2020/2021 season updates webinar. In this video, Jill Burbery (PVM) covers updates on the crop including fresh market production numbers and export program information. There is…

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Recent Publications

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…

Sweet Cherries

L. Long, G. Lang & C. Kaiser Dec 2020. This new book provides comprehensive coverage of the history, genetic improvements, production physiology of growth and cropping, orchard establishment and management, and harvest considerations for sustainable…

Recent Achievements and New Research Opportunities for Optimizing Macronutrient Availability, Acquisition, and Distribution for Perennial Fruit Crops

Lee Kalcsits et al. 10/2020. Here, we highlight recent advancements and identify knowledge gaps in nutrient dynamics across the soil–rhizosphere–tree continuum for fruit crops.

RosBREED: bridging the chasm between discovery and application to enable DNA-informed breeding in rosaceous crops

This review presents a synopsis of the approach, deliverables, and impacts of RosBREED, highlighting synergistic global collaborations and future needs. Enabling technologies and tools developed are described, including genome-wide scanning platforms and DNA diagnostic tests.

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