[nafex ibiblio list] grape sprays for black rot
scott at cs.jhu.edu
Mon Dec 26 19:07:09 EST 2011
Deb, propiconazole is never listed for black rot treatment so its a bit surprising that it worked for you. I used copper for several years but it required 3-4 sprays and its not good for the soil to all add that copper. I used Kocide 3000. My guess of why the bordeaux was not working Jerry is you did not apply it often enough. Now I just use one spray of myclobutanil around when the grapes are flowering and I get good enough control. Myclobutanil (Nova, Eagle, etc brand names) is not organic but I feel it is less damaging than adding all that copper to the soil.
Scott z7 MD
On Dec 26, 2011, at 3:17 PM, Deb Schneider wrote:
> I used Monteray Fungus Fighter this year and it worked great. Last
> year I lost the whole crop to black rot this year got a wonderful
> harvest. I only sprayed once after fruit set.
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