The characteristic symptom is the flaccidity of leaflets.
Yellowing of older leaves, necrosis of leaflets and deterioration and decay of root system are other salient features of the disease.
The leaflets curve inwardly to produce ribbing so that the whole frond develops a cup like appearance.
Abnormal shedding of buttons and immature nuts are also noticed
Management
Rogue out palms that are affected severely by root (wilt) and yield less than 10 nuts / palm / year and those, which have contracted the disease before flowering. Replant with disease tolerant material / high yielding hybrids (Chandrasankara).
Efficient management of palms suspected to be affected by coconut root (wilt) disease demands control of all pests and diseases and imparting natural resistance and health to the palms through proper manuring and agronomic practices.
