COMPARATIVE EFFICACY OF VARIOUS INSECTICIDES AGAINST WHITEFLY, Bemisia tabaci (Genn.) ADULT (HOMOPTERA: ALEYRODIDAE) ON TRANSGENIC COTTON VARIETY Bt-886

The studies were conducted at Entomological Research Sub-Station, Multan during 2009- 2010 and 2010-2011. The efficacy of eight insecticides viz., Pyramid 10SL (nitenpyram), Imidacloprid 25WP (imidacloprid), Confidor 200SL (imidacloprid), Mospilan 20SP (acetamiprid), Polo 500EC (diafenthiuron), Buprofezin 25WP (buprofezin), Talent 48SC (thiachloprid) and Movento 240SC (spirotetramat) + Bio power were tested on transgenic cotton (Bt-886) against adult whitefly. Maximum mortality of whitefly was recorded in acetamiprid 20SP i.e., 82 and 86 percent 24 and 168 hours after spray while minimum mortality was recorded in buprofezin 25WP and nitenpyram 10SL i.e., 40 and 41 percent 24h after spray. Imidacloprid 200SL and acetamiprid 20SP showed similar mortality of whitefly i.e., 76 and 75 percent 72 hours after spray. Our results suggest that acetamiprid 20SP @ 125 g per 100 liters of water is effective against whitefly adult and can included in IPM programme for the management of whitefly.