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.
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
Below is a list of upcoming industry events of note:
WA 38 / Cosmic Crisp ™ Pruning Demonstrations Scheduled
Dr. Stefano Musacchi will conduct pruning demonstrations at both the WSU Sunrise block in Rock Island and the WSU Roza block in Prosser.
WSU Sunrise demonstrations will be held Dec 13 and WSU Roza demonstrations will be held Dec 14. Demonstration trees are in their 5th leaf
and trained to bi-axis, vertical spindle and angled spindle.
To increase participant interaction, we have scheduled four 1-hour demonstrations at each location.
We have received feedback about how difficult it is to participate in the WA 38 field days when 100+ people are trying to get close enough
to see and engage in the discussion. To that end, we are going to try to stagger the crowds by repeating the demonstration throughout the
day and requesting that people select a date and time and RSVP on an online reservation system. We need to develop a system that works
so please go to the link and make your reservation. We hope this results in a more valuable educational experience for all.
To select your time slot for Sunrise Demonstration: https://sunrisepruningdemo.eventbrite.com
To select your time slot for Roza Demonstration: https://rozapruningdemo.eventbrite.com
WSU Extension Irrigated Agriculture
Starting with the WA Weed conference, there are many upcoming events related to Irrigated Agriculture.
See them on WSU Extensions events calendar: http://irrigatedag.wsu.edu/events/list/
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.