Apple Blotch (fungus - Phyllosticta solitaria):
Shiny, black blotches develop on fruit. Edges of lesions are irregular with
radiating outgrowths. Foliage symptoms are characterized by light gray spots
with a dark dot in the center. Elongated, sunken, light colored lesions with
black dots are formed on veins, midribs and petioles of the leaves. The spread
of blotch is favored by temperatures of 75 to 80 degrees F and heavy rains.
Several fungicides will control this disease.