Vol. 8, Issue 7 (2019)

Population dynamics of insect pests studied in groundnut was studied along with influence of weather parameters on insect pests during kharif 2017-18 with the variety, Kadiri-6 (K6). The results indicated that the population of thrips incidence was maximum at 31st standard week (3.25 per plant) followed by 30th standard week (23-29th July). The leafhopper population was ranged from 1.10 (25th standard week) and the highest number of leafhoppers (1.40 per plant) were observed during 34th standard week. The groundnut variety Kadiri – 6 was sown during kharif, 2017. Influence of thrips and leaf hoppers was highest during the season.

Correlation studies revealed that maximum temperature (0.540), minimum temperature (0.398), sunshine hours (0.57) and evaporation (0.581) was found to be positive whereas morning relative humidity (-0.333), evening relative humidity (-0.408), rainfall (-0.214) and rainy days (-0.232) were negatively correlated with the incidence of thirps. The population of leaf hoppers was increased gradually and reach peak during 34th standard week (1.40 per plant) followed by viz., 30th standard week (1.30 per plant), 26th standard week (1.15 per plant), 25th standard week and 27th standard weeks (1.10 per plant), 37th standard week (1.05 per plant), respectively.