< Back to Pest & Disease Management
This disease is caused by fungus Phomopsis psidii.
Symptoms:
-
The visible disease symptom is the discoloration in the region lying just below and adjoining the persistent calyx. Such area gradually increases in size and turn dark brown. Later the affected area becomes soft.
-
Along with the discoloration of epicarp, the mesocarp tissue also shows discoloration and the diseased area is marked by being pulpy and light brown in colour in contrast to the bright white colour of the healthy area of the mesocarp.
-
At an advanced stage due to disorganization of the inner affected tissues, size of the fruit shrinks and concentric wrinkles develop on the skin. Finally the affected fruit is covered with dark colour pycnidia. Serious losses up to 10% occur in the orchard if disease is not properly controlled.
Management:
-
Spray Copper oxychloride (3gms. per liter) or carbendazim or Thiophonate methyl (0.5gms.) before onset of winter fruiting.
-
Avoid fruit injury. Do proper bagging of fruits.
