What are the damage symptoms of bud worm in moringa and how it can be controlled?

This is a destructive specialist pest only recorded on Moringa. The larvae bore into the flower buds and can cause shedding of up to 78 percent.  This infestation is highest during summer. It lays eggs on flower buds which makes the larvae enter the soil and transform into a cocoon, and thus increasing their population, destroying the flower and the pods. It can be controlled by collecting the infected flowers and buds from the topsoil and destroy them completely.Spray 1 litre of Malathion per hectare of the field.