Vegetable Diseases of Ohio
For vegetable disease diagnostic services click here.
Visit the OSU Vegetable Pathology Lab's website to get vegetable disease updates, disease factsheets, Extension presentations, diagnostic posters, and disease management reports.
For information on general disease diagnosis and control, please see General Disease Management.
Anthracnose
Vegetable host range: Peppers, tomatoes, other crops
Fact sheets:
Management:
Bacterial ring rot of potato
Vegetable host crop range: Potato
Fact Sheets:
Clubroot of crucifers
Vegetable host crop range: cabbage, broccoli, cauliflower, radishes, & turnips
Fact Sheets:
Management:
- Evaluation of biopesticides and fungicides to control Rhizoctonia root and hypocotyl rot and clubroot of radish, 2006
- Evaluation of fungicides for the control of clubroot of broccoli, 2006
- Fungicides for the management of clubroot in mustard greens, 2004
- Evaluation of fungicides for the management of Clubroot on radish, 2004
Damping Off
Vegetable host crop range: Green, snap, lima, and dry beans
Fact Sheets:
Downy mildew
Vegetable host crop range: Cucurbits and Cruciferous plants
Fact Sheets:
Management:
- Evaluation of fungicides for the control of downy mildew and Phytophthora blight of winter squash, 2007
- Evaluation of drip- and foliar- applied fungicides for the control of downy mildew and Phytophthora blight of winter squash, 2007
Early blight of potato and tomato
Vegetable host crop range: Potato & tomato
Fact Sheets:
Fusarium
Vegetable host crop range: Potato, Pumpkin
Fact Sheets:
Gummy stem blight
Vegetable host crop range: Pumpkins, Squash
Fact Sheets:
Late blight
Vegetable host crop range: Potato, tomato
Fact Sheets:
Mosaic viruses
Vegetable host crop range: Pumpkin, squash, zucchini, melon
Fact Sheets:
Phytophthora
Vegetable host crop range: Peppers, pumpkin, squash, melon
Fact Sheets:
Management:
Powdery Mildew
Vegetable host crop range: Pumpkin, squash, melons
Fact Sheets:
Management:
- Integrating powdery mildew tolerance and fungicide disease control programs to maximize economic return for pumpkin production, 2005
- Evaluation of biorational products for the control of powdery mildew on winter squash, 2004
- Evaluation of fungicides and a plant defense booster for control of powdery mildew of winter squash, 2004
Rhizoctonia
Fact Sheets:
Management:
Stewart's Wilt
Vegetable host crop range: Sweet corn
Management:
Xanthomonas
Vegetable host crop range: Pepper, tomato, pumpkin, squash
Fact sheets:
Management:
- Controlling Angular Leaf Spot on Pumpkin Using Seed Treatments and Foliar Applications, 2012
- Evaluation of products for the control of bacterial leaf spot of bell peppers, 2006
- Evaluation of fungicides for the control of bacterial leaf spot of bell peppers, 2004
General Disease Management
Fact Sheets: