Caused by – Bipolaris cactivora
Fruit susceptibility to brown rot increases either if there is a lot of rain in the field or moisture during transportation.Fruit setting develops soon after fertilization and mature at day 25-35 after blooming, so all mature fruits are prone to be infected by the fungus.
Initially tan-brown, circular or eye-shaped spots are visible on the fruit surface. Under warm and humid conditions, powdery gray to dark brown conidia develop in the center at the surface and mycelium penetrates to the flesh causing more rot or flesh melting out of the fruit.
Use the copper fungicide, mancozeb and metalaxyl.
Spraying one of each chemical at weekly intervals.
Pruning out the infected parts of the plant.