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Sulfur Injury on Grapevines

  Rick Dunst, Viticulturist, Double A Vineyards, Inc.   Powdery mildew (PM) is an important vineyard disease worldwide.  As pointed out by Cornell University grape plant pathologist Wayne Wilcox, Eastern North America is the origin of powdery mildew, and we cannot grow grapes here without controlling it.  Sulfur is a traditional material used to control …

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