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Bacterial Wilt of Cucurbits:
"Signature Symptoms on Pumpkins"

Interveinal chlorosis andthen necrosis on pumpkin leaves (both photos) following systemic infection with Erwinia tracheiphila, the cause of bacterial wilt.

Photos courtesy of T.A. Zitter, Cornell University, Ithaca, NY

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Link to the Bacterial Wilt of Cucurbits "Signature Symptoms" Factsheet