Vol. 10, Special Issue 10 (2021)

Author(s):
Chaman Kumar, Pankaj Kumar, Vikas Kumar and Amrendra Kumar

Abstract:
The investigation was carried out at Research Farm of Birsa Agricultural University Kanke, Ranchi during summer 2018. The population of whitefly were commenced from 4th week after sowing i.e. 15th standard meteorological week of April 2018, Which increased during each successive week and reached to its peak (3.7 whitefly/cage) at 8^th week after sowing when maximum temperature (39.0°C), minimum temperature (22.7°C), relative humidity maximum (84.7%) and minimum (40.9%) and rainfall (5.3mm). thereafter, whitefly population gradually declined and finally negligible at the time of harvest. The correlation co-efficient analysis exhibited that temperature (maximum and minimum) showed positively significant, while the relative humidity and rainfall did not show any significant correlation.