author(s)
VG Sharma and Dr. Sushil Kumar

abstract
Bio-efficacy of different insecticides was conducted against aphid on tomato at Navsari Agricultural University, Navsari, Gujarat. The results indicated that thiamethoxam 25 WG 0.008 per cent remained the most effective treatment against aphid followed by dimethoate 30 EC 0.03 per cent. Spiromesifen 22.9 SC 0.028 per cent and indoxacarb 14.5 SC 0.005 per cent were ranked third and fourth effective treatments, respectively. On the other side, Lambda cyhalothrin 5 EC at 0.003 per cent remained the least effective treatment among all the insecticide treatments evaluated in this investigation.