Thank you for visiting the Washington Tree Fruit Research Commission’s website. We support applied science to improve the financial and ecological sustainability of Washington’s tree fruit industry through innovative horticulture, pest and disease management, postharvest programs, and development of new technologies which efficiently deliver premium quality fruit to consumers.
Below is a list of upcoming industry events of note:
Produce safety alliance grower training
Date: Thursday, February 22nd, 2018 from 7:30 am to 5:00 pm
Location: Holiday Inn – 802 E Yakima Ave. Yakima, WA 98901
Lead Trainers: Faith Critzer, Washington State University and Jeremy Leavitt, Borton Fruit.
Pre-registration is required, no on-site registration will be accepted.
This course is subsidized by WSDA support through Specialty Crop Block Grant Program. Registration fee of $25 will include the PSA Grower Training Manual, a certificate of course attendance issued by AFDO, lunch and refreshments.
Postharvest Fruit School
Date: March 20-22, 2018
Location: Wenatchee and Prosser, WA
Crop specific issues
COST: Workshop: $130, Tour:$90, Dinner: $50
For questions: contact Postharvest Fruit School contact Ines Hanrahan 509-669-0267 or
WSU Extension Irrigated Agriculture
To view the list of all WSU Extension events, click on the link below:
Since 2011, the WTFRC has conducted studies in apple and cherry to generate pesticide residue data for commonly used insecticides and fungicides to help Washington growers make more informed choices about their spray programs. The WTFRC Internal Program recently completed its 2017 study in apple which included 7 insecticides/acaricides and 5 fungicides, as well as considering the effects of spraying concentrate (100 gal water/acre) vs. dilute (200 gal water/acre) in a modern high density orchard. The results of that study are available below, as well as similar reports from previous years on apple and cherry.
2016 WTFRC Apple Residue Study
2015 WTFRC Apple Residue Study
2011-2014 WTFRC Apple Residue Summary
2014 WTFRC Apple Residue Study
2013 WTFRC Apple Residue Study
2012 WTFRC Apple Residue Study
2011 WTFRC Apple Residue Study
2017 WTFRC Cherry Residue Study
2016 WTFRC Cherry Residue Study
2015 WTFRC Cherry Residue Study
2012-2014 WTFRC Cherry Residue Summary
2014 WTFRC Cherry Residue Study
2013 WTFRC Cherry Residue Study
2012 WTFRC Cherry Residue Study
2011 WTFRC Cherry Residue Study
2011 Univ. California Extension Cherry Residue Study
The latest edition of "Fruit Matters", is now available. This monthly newsletter is a product of the Tree Fruit Extension team which is comprised of members from WSU and the Washington Tree Fruit Research Commission whose goal is to share timely information with the tree fruit community.