TY - GEN AU - Sharma,J.P. TI - Studies on the efficacy and persistence of synthetic pyrethroids against Bollworm in cotton KW - Synthetic pyrethrins KW - Earias KW - Carbaryl KW - Pectinophora gossypiella KW - Cotton KW - Bioassays KW - Insecticides KW - Spraying ER -