Anthracnose (Colletotrichum gloeosporioides)
This fungal disease is primarily a post-harvest problem when fruit is at maturity stage. Infection takes place when fruit is still very young and the fungus stays dormant till the fruit ripens. The disease appears as depressed spots on the fruit and the spots are manifested as a rot, which can penetrate deep into the flesh. In wet weather, the spots may be covered with mass of slimy, salmon pink fungal spore mass. The disease may develop very rapidly in storage if conditions in storage are humid and warm.
The anthracnose fungus lives saprophytically on twigs, rotten fallen fruits and dead or dying infected leaves. The fungus is spread by water splash.
- Remove dead branches and twigs since they harbour the fungus.
- Remove fallen rotten fruits from the field.
- Apply copper-based fungicides pre-flowering, at fruit formation, and after harvest.