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 2017 study in cherry which included 14 insecticides/acaricides, 6 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.
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:
WA38 Field Day
Date & Time: September 27 3:00pm - 4:30pm
Location: WSU Sunrise Orchard, Rock Island, WA
Join WSU for a fall field day discussing horticulture and tips to optimize fruit quality of WA 38, WSU’s newest breeding program release. With more than 637,224 WA 38 trees in the ground already, WSU and the Washington Tree Fruit Research Commission are working hard to provide growers with the information they need to choose training systems, pruning systems, rootstocks, pollinizers, and management techniques for high quality fruit.
The focus of this field visit is management tips for consistently superior fruit quality. Stefano Musacchi, WSU Professor of Horticulture will demonstrate a new top grafting trial and discuss how horticulture systems impact pack out. Ines Hanrahan, Washington Tree Fruit Research Commission, will describe tips to achieve high pack outs, including how to determine optimal harvest dates, pluses and minuses of one versus two picks, and the utility of pre-harvest fungicide applications. Karen Lewis, WSU Extension will show ways to incorporate mechanization, such as hedging, in WA 38 management.
- Learn how to use the new WA 38 starch scale.
- Discuss management for high pack outs.
- Taste WA 38 fruit.
- See mechanical pruning tools.
WSU Sunrise Orchard, off highway 28 on Sunrise Lane, about 11 miles south of Wenatchee.
Tree Fruit Research and Extension Center (509) 663-8181
Bugs and Brews - A Pear IPM Discussion
Time and Date: Wednesday, October 4, 2017 4:00 to 5:30pm
Location: Milepost 111 Brewing, 407 Aplets Way, Cashmere, WA 98815
Managing pear psylla and mites in the Wenatchee Valley and nearby areas has become increasingly difficult and costly. Resistance is a constant issue and many products have only marginal effects on the pests. Old strategies are less reliable and alternatives are gaining popularity. Join WSU Extension for a discussion on psylla and mite IPM in pears.
This meeting will focus on the latest data coming from two pear IPM projects. Chris Strohm will share pest and natural enemy data from the 2017 season and Dr. Louie Nottingham will show new data on product efficacy for psylla management.
- Learn about seasonal trends of psylla, mites, and their natural enemies.
- See results from a recent psylla ovicide trial.
Directions From US-2/97 drive south on Aplets Way. Milepost 111 is the first parking lot on the right after bridge.
Tree Fruit Research and Extension Center 509-663-8181
WA Tree Fruit Research Commission - October Board Meeting
Date & Time: Thursday, October 5, 1:00pm
Location: Washington Cattlemen's Association, 1301 W. Dollarway Road, Ellensburg, WA 98926
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.