Pyriproxyfen- An IGR for the management of whitefly Bemisia Tabaci (Gennadius) on chilli Chandi Ravinder Singh*, Kumar Vijay, Bhullar Harpal Singh Department of Entomology, Punjab Agricultural University, Ludhiana, 141004 *Email: rschandi@pau.edu
Online published on 4 January, 2018. Abstract Pyriproxyfen 10EC was evaluated @ 20, 30, 40 and 50 g a.i. ha−1 for the control of whitefly on chilli during 2009 and 2010 in Punjab. It was compared with malathion 50 EC @ 500 g a.i. ha−1 as standard check. Pooled analysis of two years data showed maximum reduction in population of whitefly adults in pyriproxyfen @ 50 g a.i. ha−1 (38.38%) which was at par with malathion (39.89%) after 3 days of spray. After 7 days of spray, maximum reduction of whitefly adult population was recorded in pyriproxyfen @ 50 g a.i. ha−1 (79.97%) which was significantly better than standard check malathion (38.39%). After 10 days of spray pyriproxyfen @ 50 g a.i. ha−1 recorded 82.68% reduction in whitefly population which was significantly better than standard check malathion with 30.99% reduction. Among all the treatments, pyriproxyfen @ 40 and 50 g a.i. ha−1 recorded significantly higher yield than all other treatments. Pooled analysis of two years experiment revealed that mortality of natural enemies was significantly less in all the doses of pyriproxyfen compared to standard check malathion, proving that pyriproxyfen is relatively safe to natural enemy complex in chilli. Top Keywords Bemisia tabaci, chilli, Punjab, pyriproxyfen, adults, reduction, malathion, natural enemies, safety, phytotoxicity. Top |