author(s)
Hemant Swami, Lekha, Virender Singh, Deepak Jain and Kuldeep Kumar

abstract
A field experiment was conducted to evaluate insecticide Pyriproxyfen 10% EC 75 g a.i @ 750, 1000, 1250 ml for controlling whitefly, Bemisia tabaci and aphid infesting chilli crop with other treatments i.e., Imidacloprid 17.8% SL and Fenpropathrin 30% EC including untreated control at Horticulture Farm, Rajasthan college of agriculture, Udaipur during Kharif 2016 and 2017, subsequently. All among the treatments, Pyriproxyfen 10% EC @ 1250 ml/ha followed by Imidacloprid 17.8% SL 50 g a.i. @ 250 ml/ha found the most effective to reduce the whitefly, Bemisia tabaci and aphids Aphis gossipii population in chilli crop during both years, Kharif 2016 and 2017. The chilli fruit yield among different treatments ranged from 141.80 to 146.00 and 142.30 and 146.80 q/ha against 122.0 and 122.40 q/ha in untreated control during Kharif, 2016 and 2017, respectively. The highest marketable yield of chilli146.0 and 146.40 q/ha was recorded in case of spray of Pyriproxyfen 10% EC 125 g.a.i @ 1250 ml during Kharif, 2016 and 2017, respectively. It was found at par to spray of Pyriproxyfen 10% EC 100 g.a.i @ 1000 ml which yielded 144.0 and 144.70 q/ha during Kharif, 2016 and 2017, respectively. It was followed by Imidacloprid 17.8%SL 50 g.a.i. @ 250 ml and Pyriproxyfen 10% EC 75 g.a.i @ 750 ml which recorded 143.80 and 143.40and 144.20 and 143.70q/ha during Kharif, 2016 and 2017, respectively. Fenpropathrin 30% EC 100 g.a.i @ 340 ml was also found superior to untreated control which yielded 141.80and 142.30 q/ha during Kharif, 2016 and 2017, respectively.