Narrow distribution. Oceania. The ginger weevil has a wide host range, including coconut, chillies, eggplant, kava, roselle, sweetpotato, and some orchids. An important condition caused by insects and fungi.
A problem just above soil level (the collar) caused by the ginger weevil and two fungi.
Weevils lay eggs in the stem, larvae make tunnels and fungi cause rots. Later, the swollen stems crack, leaves fall, vines die back and death results.
A serious problem, worse during the dry season.
Cultural control: none recommended.
Chemical control: use a fungicide, thriam, mixed with latex, painted on the collar region.