Small pale yellow or greenish-yellow streak, parallel to the leaf veins. Later the streak darken and expanded laterally to form elliptical brown spots. Used resistant cultivar. Spray with benomyl. The first symptom is yellowing of older leaves or collapse of the petiole while the leaves is still green.
All leaves eventually collapse and die hanging on the pseudostem.
Later, pseudostem may split. Use resistent variety. Used diseases free material. Larvae feed and tunneling in the corm of the plant. Affected corm ridled with tunnels.