Washington Tree Fruit Research Commission

Wenatchee, Washington

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  • apple-sunrise.jpg
  • apricots-royal-city.jpg
  • cherry-cracking-2.jpg
  • cherry-cracking.jpg

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 2019 study in cherry which included 12 insecticides/acaricides and 5 fungicides, including a few new products.    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.

APPLE                                                              CHERRY 
                                                                              2019 WTFRC Cherry Residue Study
2018 Apple Residue Study                                                                2018 WTFRC Cherry Residue Study 
2012 - 2017 Apple Residue Summary                                                       2012 - 2017 Cherry Residue Summary
2017 WTFRC Apple Residue Study                                                 2017 WTFRC Cherry Residue Study
2016 WTFRC Apple Residue Study                                                 2016 WTFRC Cherry Residue Study
2015 WTFRC Apple Residue Study                                                 2015 WTFRC Cherry Residue Study
2011-2014 WTFRC Apple Residue Summary                                2012-2014 WTFRC Cherry Residue Summary
2014 WTFRC Apple Residue Study                                                 2014 WTFRC Cherry Residue Study
2013 WTFRC Apple Residue Study                                                 2013 WTFRC Cherry Residue Study     
2012 WTFRC Apple Residue Study                                                 2012 WTFRC Cherry Residue Study
2011 WTFRC Apple Residue Study                                                 2011 WTFRC Cherry Residue Study
                                                                                                              2011 Univ. California Extension Cherry Residue Study