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.
In response to increasing industry concerns about meeting Maximum Residue Levels (MRLs) for pesticides in foreign markets, the WTFRC initiated studies in 2011 in apple and cherry to develop some 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 2018 study in cherry which included 10 insecticides/acaricides, 3 fungicides, and a potash & phosphite foliar fertilizer. The results of that study are available below, as well as similar reports from previous years on apple and cherry; results of an ongoing WTFRC residue study in apple will be posted in September.
2017 WTFRC Apple Residue Study
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
Below is a list of upcoming industry events of note:
FARMWALK: Organic Orchard Pest Management/Manejo Organico de Plagas de la Huerta
Date/Time: August 6 @ 12:00 pm - 4:00 pm
$15 for Students and Tilth Members / Estudiantes y miembros
$25 for Non-Tilth Members / no miembros
This will be a fully bilingual FARMWALK offered with support from WSU Skagit County Extension, Viva Farms and the USDA
Manuel Mendoza, has successfully made the transition from farm worker to farm owner, purchasing the 60-acre White Bear Orchards he had worked on for 25 years. Manuel will discuss and demonstrate his organic pest management strategies and implementation of habitat for beneficial pollinators. Working together with WSU entomologists we will scout for beneficial insects and discuss ways of further enhancing their habitat. We will also consider varietal selection to enhance pest management strategies. We’ll also have a chance to learn more about Manuel’s updated irrigation system, which he has installed with USDA matching funds, to help conserve and manage his water more efficiently.
WSU Food Systems Program
WSU WA38 Field Days
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.