Tunnnelling in corm

Severe infestation reduces plant vigour and the tunnelling allows the entry of rot organisms, which result in faster corm breakdown.

Banana weevil borer

Cause: Tunnelling by larvae of Cosmopolites sordidus.
Solution: Use stem baits to establish the severity of the infestation. If necessary treat with an appropriate chemical. Follow label directions regarding application method and timing to maximise the effectiveness of the treatment.