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  1. R

    Is this black rot, or something else?

    It’s across 7 varieties: gewurztraminer, gruner, Riesling, cab franc, Lemberger, Pinot noir, and cab Sauv. It’s about 50% of the vines evenly spread across 1 acre. Obtaining mancozeb is in the works. My other guess would be possible chemical burn from too strong of a mix of captan (.4lb of...
  2. R

    Is this black rot, or something else?

    We put in a first time vineyard this year in May and have seen good growth so far. Over the last week, a fair number of vines have developed leaf spots. The first thing that comes to mind is black rot. Since green growth started, they have been sprayed twice. They were sprayed with captan a...
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