Anthracnose (fungus - Colletotrichum gloeosporioides):
Black circular spots up to one-half inch appear on fruit. The center of the
spots may be slightly sunken and spots may develop cracks. During moist periods,
the spots produce pinkish, moist masses of fungal spores. As the fruit ripens,
the infection spreads rapidly into the flesh causing a greenish-black, fairly
firm decay. Fungicides can control the disease and should be applied at bud
swell.