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Scab on pumpkin/gourd:leaves

Scab lesion on pumpkin (C. Pepo). Developing fruit within this thick canopy showed early scab lesions.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Scab lesions initially appear water-soaked and brown with a yellow halo surrounding the lesion. Lesions eventually crack, producing a "shot-holed" appearance not unlike bacterial angular leaf spot.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Distinctive scab lesions on a pumpkin leaf. This level of infection can lead to serious fruit infection and unmarketableproduce. Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Scab infection of pumpkin (C. pepo). Lesions have heavy sporulation but are lacking the presence of the yellow halo.Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY