Heavily infected fruit may crack open and occasionally show gumming. Varieties vary widely in susceptibility to bacterial spot. The fruit symptoms may be confused with those of peach scab. Injuries in fully matured fruit act as infection sites for Rhizopus rot. The disease develops very rapidly in warm temperatures.
Infected tissues become very soft and watery.
The surface of infected fruit soon becomes covered with coarse, fungal growth and black spore producing structures. The disease spreads rapidly to adjacent fruit at the point of contact. This disease can become very severe when wet weather at harvest is combined with careless fruit handling. Root-knot nematode symptoms occur as small, spherical galls or knots on the roots of peach trees. Trees infected when very young may die from massive root destruction.