Pseudoperonospora Cubensis

Fungal Disease

Pseudoperonospora Cubensis

Fungal Disease

Pseudoperonospora Cubensis

Fungal Disease

Downy mildew, caused by the fungus Pseudoperonospora cubensis, is primarily an airborne fungus that can cause considerable damage under favorable conditions. During periods of moist, cool weather, downy mildew develops rapidly, resulting in a scorched appearance over an entire field.

Spread: Windborne spores, rain and irrigation splash, human spread on equipment and hands
Favorable Conditions: Very wet, humid conditions, moderate temperatures

Source-https://vegpath.plantpath.wisc.edu/diseases/cucurbit-downy-mildew/

Photo Credit- Gerald Holmes, Strawberry Center, Cal Poly San Luis Obispo, via Bugwood.org