Studies on the extent of damage caused by Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) on six vegetable crops

Abstract

A survey was conducted to study the incidence and extent of damage caused by American serpentine leaf miner, Liriomyza trifolii on six vegetable crops, using an infestation index and score for the intensity of infestation in a 0- 4 scale based on the infested area on each leaf. Among the six crops surveyed maximum infestation index was observed in ash gourd (55%)followed by cowpea (45%). The older leaves were preferred more than the younger leaves. The infestation (25%) was minimum in pumpkin and bitter gourd.