The Washington Tree Fruit Research Commission recently published the 2019 results for apple in their ongoing pesticide residue study.
Since 2011, WTFRC has conducted studies in apple and cherry to generate pesticide residue data for commonly used insecticides and fungicides. The annual studies are intended to help Washington growers make more informed choices about their spray programs.
The 2019 study in apple included 10 insecticides/acaricides and five fungicides in two distinct application scenarios in a modern high-density Gala orchard.
The results of that study, as well as previous reports from similar projects on apple and cherry, are now available on the WTFRC homepage: treefruitresearch.com
—by Jonelle Mejica