Vol. 11, Issue 10 (2022)

Author(s):
Arun Kumar, RK Dwivedi and Omendra Sharma

Abstract:
The experiments were conducted in completely randomized block design with three replications during the Rabi, seasons of 2020-2021 and 2021-2022 at Student Instruction Farm (SIF) Chandra Shekhar Azad University of Agriculture & Technology, Kanpur- 208002 (U.P.). To the study seasonal incidence of gram pod borer, Helicoverpa armigera Hubner, during Rabi season 2020-2021 and 2021-2022. The population was started from December 2020 & 2021 (51^st standard meteorological week) to April 2021 & 2022 (15^th standard meteorological week) of crop. The larval population was low during December to third week of January. The both years maximum population increased and reaches its peak (14.19 larvae/5 plants) in all control plots on 26 February, 2021 (8^th standard meteorological weeks). When the maximum and minimum temperature was 2021 at 28.80°C and 11.90°C, respectively, relative humidity was 57% and rainfall to the tune of nil was recorded. Second year maximum population increased and reaches its peak (14.79 larvae/5 plants) on 22 February, 2022 (8^th standard meteorological weeks) and the maximum and minimum temperature was 27.40°C and 12.30°C, respectively, relative humidity was 64.50% and the rainfall to the tune of nil was recorded.