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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

2019 Storage Recommendations for WA 38 (Cosmic Crisp®)

Published on
WA 38 can be stored with minimum losses throughout a yearlong storage period. Firmness is retained extremely well in CA storage (only 1-2 pounds loss…

Apple frost damage during harvest

Published on
Be careful with handling your apples under frost conditions!

Top 6 things to get it right – Harvest for optimum quality of COSMIC CRISP®

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To ensure the optimum quality at harvest of your fruit, follow these six tips.

WA 38 Maturity Testing & Online Resources

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WA 38 harvest is almost here and we want to remind people of the resources on our treefruit.wsu.edu website. On the left side menu column,…

WA 38 / COSMIC CRISP® Maturity Field Days Scheduled

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The WTFRC and WSU Extension have scheduled field days across the region to demonstrate WA 38 fruit sampling and starch analysis using the new WA…

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Featured Event

2019 Tree Fruit Stakeholder Listening Session – North Central

Oct 17, 2019
You are invited to provide your input on research and extension topics. Please join us for a discussion Thursday October 17, 2019 in Wenatchee. Additional opportunities will be available in South Central Washington, to be…

Upcoming Events

17
Oct

2019 Tree Fruit Stakeholder Listening Session – North Central

Event Details

24
Oct

Next Generation Network: Fruit Breeding 101

WSU Columbia View Orchard
Event Details

13
Nov

Next Generation Network: New Technology for Efficient Harvest

Chateau Faire Le Pont
Event Details

4
Dec

Next Generation Network: Looking Ahead at Market & Economic Trends

Chateau Faire Le Pont
Event Details

More Events

Featured Videos

Taking time when testing WA 38 (COSMIC CRISP®) maturity

Ines Hanrahan, executive director of the Washington Tree Fruit Research Commission, shows differences in testing apple maturity between Granny Smith and WA 38 (COSMIC CRISP®) using an iodine starch test. Learn more about the recently…

Para mejorar la calidad de fruta, utilice el análisis de suelo

El análisis de suelo es fundamental para el manejo de la nutrición del huerto. En este video, Bernardita Sallato nos muestra cómo tomar la muestra de suelo en un huerto frutal. https://www.youtube.com

Netting for Apple Insect Management

Shade nets are becoming popular to reduce sunburn on apples, but what effect do they have on movement of insects? WSU graduate student Adrian Marshall is investigating the potential of mesh barriers to keep pests…

WA 38 Fruit Quality Update 2019

Dr. Ines Hanrahan, Executive Director for the WA Tree Fruit Research Commission, presents information about WA 38 fruit quality studies including recent results and future plans. This presentation was part of the 2019 Apple Day…

WA 38 Horticulture Update 2019

Dr. Stefano Musacchi, Endowed Chair of Tree Fruit Physiology & Management at WSU, discusses the most recent information about the best horticultural practices for WA 38 apple trees and updates on related research. There is…

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Recent Publications

4th leaf WA38 regraft with full 2-d canopy and full crop.

Apple Scion and Rootstock Contribute to Nutrient Uptake and Partitioning under Different Belowground Environments

Soil environment strongly contributes to tree growth and development, affecting nutrient and water uptake. Composite woody perennials, like apple, are a combination of two genetically different parts: a rootstock and a scion, and yet, the…

Use of Protective Netting in Washington State Apple Production

G Mupambi, D Layne, L Kalcsits, S Musacchi, S Serra, T Schmidt, and I Hanrahan. 2019. TB60E. WSU Extension Pubs. Washington State (WA) is the largest producer of apples in the United States. The major…

Protective Netting Improves Leaf-level Photosynthetic Light Use Efficiency in ‘Honeycrisp’ Apple Under Heat Stress

G Mupambi, S Musacchi, S Serra, L Kalcsits, D Layne, and T Schmidt. 2018. HortScience 53(10): 1416-1422. DOI: 10.21273/HORTSCI13096-18

Postharvest Dry Matter and Soluble Solids Content Prediction in d’Anjou and Bartlett Pear Using Near-infrared Spectroscopy

A. Goke, S. Serra, S. Musacchi. 2018. Hortscience 53(5):669-680.  https://doi.org/10.21273/HORTSCI12843-17

Characterization of a novel self-incompatibility allele in Malus and S– genotyping of select crabapple cultivars

R. Sheick, S. Serra, P. De Franceschi, L. Dondini, S. Musacchi. 2018. Scientia Horticulturae 240:186-195. https://doi.org/10.1016/j.scienta.2018.05.050

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