• Brown spots develop on the margin and at the tip of the leaf lamina.  They increase in size and become dark brown. Black dots appear on the spots which are acervuli of the fungus.
• Survive on mango leaves for over a year. Spreads through wind borne conidia.
• Heavy infection is noticed during the monsoon when the temperature is 20-25oC.and high humidity.

Management

• Remove and destroy infected plant parts.
• Spraying copper oxychloride 0.25 Mancozeb 0.25% or Bordeaux mixture 1.0%.