Question: What is this new treatment that I am hearing about for protecting wine grapes against powdery mildew without the use of chemicals?
Answer: There is a new system being tested for mildew at Vineland Estates in Ontario Canada that hopefully will show success against this ever increasing problem in the warmer vineyards around the world. This new sustainable approach combines 3 basic elements of UV Light, Hydrogen Peroxide, and Ozone on the grape vines. Detailed article by CBC Canada updated on May 28 is linked here.
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