Brown spot: Pestalotia mangiferae

Symptoms:

• The affected area of fruits becomes olivaceous-black and shrinks.
• Black dots appear at the centre of the spots represent the acervuli.
• On matured green fruits, small brown spots appear with greyish white centre which later turn to bigger lesions with large number of acervuli seen as black dots.

Brown spot on leaves	Black spots on twigs	Black spots on fruits

Epidemiology:

• Temp. between 20 and 250 C.
• Mycelial growth with sporulation takes place at pH 5.5 to 6.0.
• Wounding leads to more disease incidence.

Image Source: http://www.ivorychem.com/papers/MangoBrownSpotsManagementPaper.pdf