A large group of related fungal diseases, in the order Erysiphales, that coat the leaves, stems and fruit of an enormous range of crops, from cereals and grapes to cucurbits and roses, in a characteristic white powdery growth. Individual species are often host specific, but collectively powdery mildews are among the most common and economically significant plant diseases in temperate and subtropical agriculture worldwide.
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Grape, Crops Grape powdery mildew (Erysiphe necator) is one of the most significant fungal diseases of cultivated grapevine.
Sources
1. Powdery Mildew (Wikipedia)
Wikimedia FoundationOpening definition paragraph
Erysiphaceae is a family of ascomycete fungi in the order Helotiales. The members of this family are obligate parasites with a superficial mycelium that forms a characteristic white, powdery coating on their host plants.
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A large group of related fungal diseases, in the order Erysiphales, that coat the leaves, stems and fruit of an enormous range of crops, from cereals and grapes to cucurbits and roses, in a characteristic white powdery growth.
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