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Downy mildew (Pseudoperonospora cubensis) on Pumpkin (Cucurbita spp.)


4 Images
5368441
Paul Bachi
University of Kentucky Research and Education Center

Close-up of upper side of pumpkin leaf with infected areas at first being yellow and then becoming necrotic.

5368442
Paul Bachi
University of Kentucky Research and Education Center

Close-up of underside of the infected areas which look more like discrete spots.

5368443
Paul Bachi
University of Kentucky Research and Education Center

Close-up of one infected area where the black dots are groups of dark spores.

5368444
Paul Bachi
University of Kentucky Research and Education Center

Branched sporangiaphores and dark brown sporangia.