Why internal fruit necrosis occurs in Aonla and how it can be managed?

Necrosis is a physiological disorder. It is characterized by browning of innermost part of mesocarpic tissues followed by browning of the epicarp. In severe cases, mesocarp of affected fruit turns black and becomes corky and gummy pockets develop. This is due to deficiency of boron.

It can be managed by Spraying of 0.4-0.6% borax or zinc sulphate (0.4 %) + copper sulphate (0.4 %) thrice during September and October at 10-15 days interval.