Initial symptom is the characteristic change of spindle leaf colour from green to yellow and then brownish.
The leaves rot and the growing bud rots causing death of the palm.
The affected young leaf whorl can be easily pulled off.
Management
Remove and destroy affected spindle and leaves.
In early stages of infection, scoop out affected rotten tissues by making longitudinal side splits
Keeping sache of Metalaxyl + Mancozeb 80 WP or Fosetyl-Al at the base of the spindle leaf.
Drench the spindle leaf base and the base of the other leaves with 1% Bordeaux mixture or Potassium phosphonate 50 SC (4 ml / litre of water) or Metalaxyl + Mancozeb 80 WP (2 gram/litre of water) in 2 weeks interval especially during monsoon season. Stem injection or root feeding with 6 ml of Potassium phosphonate 50 SC and 5 ml of Tridemorph 80 EC in 100 ml of water
Apply Bordeaux paste on the exposed healthy tissues or drench crown with 1% Bordeaux mixture.
