The pathogen invades stem mostly through open wound.
The predisposing factors for the disease are :-
Deep planting, planting in gravelly soils, mulching closer to collar wounds caused by weeding implements, fertilizer application close to collar, pegging, low moisture status in bark and surface watering during dry weather.
The main symptoms - chlorosis, cessation of growth, profuse flowering and canker on stem.
Management
Remove affected portion by pruning the healthy wood and apply copper fungicide to cut ends
