Infested plants show external ridges around the stem.
yellowing and wilting of leaves.
The young plants (7 to 8 year old) attacked by the borer may die in a year while older plants withstand the attack for a few seasons, yielding more of floats.
Management
Maintain optimum shade
Prune the infested plants, uproot if the borer has entered the root and burn the affected parts.
Proper agronomic practices to retain plant vigour
Remove loose scaly bark to discourage egg laying
10% lime application on main stem and thick primaries during flight periods
