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Symptoms: Lesions occur on the leaf stem, lower leaf surface and pods. Lesions are brown and may appear sunken on pods. Photo by the Plant Disease Clinic |
Anthracnose is a common fungal disease that attacks the foliage and fruit of beans. |
Symptoms: Lesions occur on the leaf stem, lower leaf surface and pods. Lesions are brown and may appear sunken on pods. Photo by the Plant Disease Clinic |
| Causal organism: | Colletotrichum lindemuthianum |
| Over wintering: | In plant material and debris |
| Months of infection: | May to June |
| Method of dispersal: | Rain and wind |
| Infection point: | Leaves, by direct penetration by the fungus |
| Control: | Use disease-free seed. There are bean varieties with resistance to different races of anthracnose. Rotate crops every two to three years. |
| Labeled fungicides: (First Application) |
Chlorothalonil (Bravo) or thiophanate-methyl (Cleary's 3336) when symptoms appear |
| Comments: | Always start with clean seeds and healthy seedlings to avoid this disease. |
| For Additional Information | Back to Bean Diseases |
