Black Dot Disease of Potato
Colletotrichum coccodes
Potatofungal
A fungal disease producing tiny black fruiting structures ("black dot") visible in tuber skin.
Symptoms
Gray-brown lesions on stems, roots, and tubers with tiny black microsclerotia ("black dot") visible in the skin.
Favorable conditions
- •Plant stress and continuous potato cropping
- •Poor storage curing conditions
Management
- 1Rotate crops
- 2Treat seed potatoes
- 3Cure tubers properly before storage
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