Potato Leaf Attacked by Phytophthora Infestans
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Pictured is a potato leaf that has been attacked by phytophthora infestans. Phytophthora infestans is a fungus commonly known as the potato disease fungus. Brown spots appear on the leaves. The lower surface of the spot bears a thin, whitish coating.
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Disease and Pest ManagementSource
Nicholson, George The Illustrated Dictionary of Gardening, Div. VI (London, England: L. Upcott Gill, 1884)
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