PRIYANKA, AKHTER HUSSAIN*, S.K. KHINCHI, B.L. JAT AND K.C. KUMAWAT

Population dynamics of major insect pest of okra, experiment was carried out at Horticulture farm, S.K.N. College of Agriculture, Jobner (Rajasthan) during , 2017. The incidence of leaf hopper, Kharif Amrasca biguttula biguttula Bemisia tabaci Earias (Ishida), whitefly, (Genn.) and shoot and fruit borer spp. was registered as major insect pests on okra crop. The incidence of leaf hopper and whitefly was recorded in 32nd standard meteorological week (SMW). The peak incidence of leaf hopper and whitefly was recorded in 37th SMW (15.60 leaf hoppers and 18.60 whiteflies) / three leaves. The infestation of shoot and fruit borer on shoot was recorded in 32 SMW, which, reached its peak in 38 SMW (17.60 per cent) The population of leaf nd th hopper, whitefly and lady bird beetle, (Fab.) had significantly positive correlation Menochilus sexmaculatus with minimum temperature (r = 0.67, r = 0.65 and r = 0.67, respectively) and relative humidity (r = 0.65, r = 0.64, r = 0.65, respectively), but non-significant with rainfall and maximum temperature. The shoot infestation had non-significant relation with abiotic factors. Infestation of fruits had positive significant correlation with maximum temperature (r = 0.74) and negative significant with minimum temperature (r = - 0.92 on number basis and r = -0.93 on weight basis) and relative humidity (r = -0.90 on number basis and r = -0.91 on weight basis) but non-significant with rainfall