I have been spraying my 300 tree filbert orchard for blight using copper sulfate powder. I have been told that I should add something else to the mix to better control eastern filbert blight. I would like to know what you would recommend. Thank -you Dan Smith
Lane County Oregon
If you have a private applicator pesticide license, here is a list of many products that can be used.
IF you don't have a license, you are limited to:
Bonide Fungomil, or Liqui Cop,