On red peppers, the lesions may bleach the color from the fruit. In some cases the lesions become brown and then black from the formation of setae and sclerotia. Or, the center of the lesions may develop pustules of salmon-colored spores which break through the epidermis in wet masses. Rotate away from solanaceous plants for at least 2 years. Choose planting sites that have good drainage.
Some resistant cultivars are available.
Pepper cultivars that have a shorter ripening period may escape anthracnose. For late-maturing peppers, where there has been a history of disease, apply fungicide several weeks before harvest. Alternaria Leaf Spot and Fruit Rot. Alternaria solani occasionally causes a minor leaf spot on pepper foliage. Alternaria alternata may cause fruit rot, particularly following sun scald or blossom end rot.