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  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA
  • Washington Tree Fruit Research Commission Wenatchee WA

Pesticide Residue Reports

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 chemistries to help Washington growers make more informed choices about their spray programs.  The results of the most recent study on apple evaluating residues of fourteen insecticide/acaricides and eight fungicides is available below, as well as reports from previous WTFRC projects on apple and cherry and a 2011 project on cherry insecticide residues conducted by David Haviland of the University of California Cooperative Extension.

2013 WTFRC Apple Residue Study

2013 WTFRC Cherry Residue Study

2012 WTFRC Apple Residue Study

2012 WTFRC Cherry Residue Study

2011 WTFRC Cherry Residue Study

2011 Haviland Cherry Residue Study

2011 WTFRC Apple Residue Study

 

 

Starch Iodine Index for Honeycrisp

The Washington Tree Fruit Research Commission (WTFRC) Internal Program has developed a starch index for Honeycrisp (scale 1-6) based on actual starch patterns observed for fruit grown in Washington State. To download a copy, click on the link below.

 2012_Honeycrisp_starch_scale.pdf
2012_Honeycrisp_starch_scale__COLOR_.pdf

 

 

2013 Cherry Cracking Susceptibility Test

The WTFRC internal program has developed a grower version of a bench-top test to determine cherry cracking susceptibility. Detailed instructions can be downloaded by clicking on the link below.

2013_Cracking_Susceptibility_test

 

   

Tree Fruit Industry Calendar

The Washington Grower's Clearing House has set up an industry-wide calendar.  This calendar presents a 1-stop place to find most events throughout the year.  To view this calendar, click on the link below:

Tree Fruit Industry Calendar

 

Spotted Wing Drosophila Update

The SWD update page is now operational on the WSU Extension website.  For the latest information on spotted wing drosophila, visit SWD update - WSU Extension

 

   

Upcoming Events

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