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Sugarcane whitefly is one of the important pest of sugarcane. Chemical and biological controls are used in an integrated program to prevent sugarcane whitefly infestations. Several insecticides from various groups have been registered to control whiteflies. In this study, efficacy of deltamethrin 2.5% EC, dinotefuran 20% SG and spiromesifen 240 SC was evaluated against sugarcane whitefly, Neomaskellia andropogonis Corbett (Homoptera: Aleyrodidae) under field conditions. The population of whitefly at different life stages was recorded at 3, 7, 15 and 30 days after spraying the insecticides. According to the findings, cumulative reduction in whitefly population was recorded by application of insecticides even after 30-day post-treatment. Application of insecticides significantly increased the mortality level of whitely at different life stages compared to the control. However, higher level of mortality was …