Scab of Cucurbit Crops
Return to Diseases
Scab (Cladosporium cucumerinum) may appear on cucumber, muskmelon, pumpkin, and squash. Leaves and stems can be affected, but the greatest losses occur when fruit are infected. On fruit, small, sunken spots develop that may be covered with an olive-green mass of spores. Secondary pathogens may invade lesions, leading to fruit rot.
Cucumber scab.
(Photo: Mary Ann Hansen, Virginia Tech, Bugwood.org)
Management:
- Resistant varieties
- Pathogen-free seed
- Crop rotation
- Fungicides
