Monilinia fructicola, Botrytis cinerea, Rhizopus spp. Spore masses may grow on the rotted areas.
Fruit becomes more susceptible as it ripens.
Botrytis -diseased fruit usually do not remain on the tree until next season, but they are present as inoculum sources for the current season's crop. When Monilinia -diseased fruit remain on the tree, they are known as mummies. Rhizopus rot is a postharvest storage problem. Monilinia and Botrytis can infect uninjured ripening fruit and cause green fruit rot and incipient infections of young fruit. Wetness, either rain or dew, and injury or fruit cracking increases preharvest infection and consequent rot.