Persistent toxicity of endosulfan, phosalone and monocrotophos against musard aphid Lipaphis erysimi (Kalt) on rapeseed

* Central Plant Protection Trg. Institute, Rajendranagar, Hyderabad - 500 030.

Indian Agricultural Research Institute, New Delhi-110012

Part of the Thesis submitted by Senior Author for the Ph.D. degree of Indian Agrl. Research Institute.