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Downy mildew on winter squash leaves
downy mildwe on winter squash

downy mildew on winter squash
Early symptoms of downy mildew on the upper and lower surface of a winter squash leaf.

downy miildew on winter squash
Patches of yellow tissue on winter squash due to downy mildew.
Photos Courtesy of M.T. McGrath, Long Island Horticultural Research and Extension Center, Cornell University