Department of Entomology, Acharya N. G. Ranga Agricultural University, Rajendranagar, Hyderabad - 500 030, India.
*Corresponding address: Scientist (Entomology), AICRP on Forage Crops, LRI, Rajendra nagar, Hyderabad, 500 030, India
1Part of the approved Ph. D. thesis submitted by K. Jhansi to Acharya N.G. Ranga Agricultural University, Rajendra nagar, Hyderabad, 500 030, India
Studies conducted on the occurrence of metabolic mediated resistance in cotton aphid, A. gossypii to selected insecticides viz., endosulfan, monocrotophos, dimethoate, phosphamidon, carbaryl and cypermethrin using synergist PBO 1:10 and 1:5 ratios exhibited PBO suppressible metabolic resistance of 2.54, 3.33, 1.92, 2.15, 1.28 and 4.44 fold at 1:5 ratio and 3.50, 4.12, 2.40, 4.94,1.88 and 6.67 fold at 1:10 ratio to endosulfan, monocrotophos, dimethoate, phosphamidon, carbaryl and cypermethrin respectively at LC50.
