These spots may coalesce, giving a blighted appearance. Eventually these spots turn brown and dry up, leaving holes in the leaves. A tattered appearance of the leaves often results. Fruit spots are raised, scabby areas. Fungi may enter these spots and cause secondary fruit rots.
Bacterial spot is difficult to control once it is present.
Avoid working around plants when the foliage is wet. Do not plant peppers or tomatoes in the same spot in successive years. Control weeds, especially nightshade and ground cherry. Applications of a fixed-copper fungicide can slow the spread of the disease but will not eradicate existing infections. Remove infected plant debris or plow under deeply.