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Gummy Stem Blight/Black Rot infection of assorted cucurbits (Didymella bryoniae (sexual stage); Phoma cucurbitacearum)

Black rot lesions on calabressi squash

Photo courtesy of A.F. Sherf, Cornell University, Ithaca, NY

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Link to the Factsheet on Gummy Stem Blight/ Black Rot of Cucurbits

Link to Photo Gallery of Gummy Stem Blight/ Black Rot of Cucurbits