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The present study on the population dynamics of whitefly, Bemisia tabaci (Gennadius) and its parasitization by Encarsia spp. on brinjal (var. Hisar Shyamal) was carried out at the Research Farm, Department of Entomology, CCS HAU, Hisar during Spring 2017. The whitefly adult and nymphal population and per cent parasitization by Encarsia spp. were observed from February to June at ten-day intervals during Spring 2017. The peak population of whitefly adults i.e., 15.7 per leaf was recorded during 22^nd April to 1^st May 2017. The maximum density of whitefly nymphs i.e., 17.8 per leaf was observed during 2^nd to 11^th May, 2017. Maximum parasitization of B. tabaci nymphs by Encarsia spp. on brinjal (25.5%) coincided with the peak population of whitefly nymphs. Correlation analysis with weather parameters revealed that the whitefly population (adult and nymph) and nymphal parasitization had significant positive correlation with maximum temperature [(r = 0.60), [(r = 0.64), (r = 0.59)] and negative correlation with morning [(r = -0.82), [(r = -0.83), (r = -0.79)] and evening relative humidity [(r = -0.70), [(r = -0.71), (r = -0.62)], respectively.  

 Keywords: Brinjal, Bemisia tabaci, Encarsia spp., population dynamics, weather parameters, correlation