Initially one of the youngest three leaves turns pale-green or yellow in colour and breaks down at the petiole and the pseudostem. Later all the other leaves collapse around the pseudostem. An infected finger or fruit shows dry and rotted pulp that is coloured brown or black, and the presence of bacterial discharges.
- Use resistant varieties, if available.
- Use certified disease-free planting material.
- Remove infected plants from fields and destroy them.