Department of Plant Protection, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh - 202 002, U.P., India.
*Corresponding author's E-mail: entowajid@gmail.com.
Second instar larva of Earias vittella was used to study the alone and joint effect of Bacillus thuringiensis formulation (biolep) and endosulfan which revealed that endosulfan was effective even at a concentration of 0.00312 percent while biolep was most effective at higher concentration like 1.0 percent. Result of joint effect showed an additive effect with endosulfan.