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Downy Mildew in Cucurbits
Yellow spots on the upper surface of these pumpkin leaves are early symptoms of downy mildew. These are not diagnostic as similar spots can occur with other diseases, notably powdery mildew.

Photo Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University


Photo Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University


Photo courtesy of T.A. Zitter. Cornell University


Photo Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University


Photo Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University

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Link to the News Article "Update on Managing Downy Mildew in Cucurbits"

Link to the Factsheet on Assorted Foliar Diseases of Cucurbits

Link to Photo Gallery of Assorted Foliar Diseases of Cucurbits