Indian Journal of Entomology

A field experiment was carried out to study the population dynamics and bionomics of gram pod borer Helicoverpa armigera (Hubner) in chickpea at Agronomy farm and laboratory, S K N College of Agriculture, Jobner, Jaipur (Rajasthan) during rabi 2021-22. The data revealed that the first appearance was in 50^th standard meteorological week (SMW) and attained peak in 8^th SMW. Statistical analysis of weather parameters with larval incidence showed significant positive correlation only with maximum temperature (r = 0.56*). The biological traits of H. armigera has been studied at 20± 1°C coupled with 60± 5% RH and 12 L: 12 D photoperiod in the laboratory revealed that the single female produced 445.25± 50.02 eggs; incubation period ranged from 3.92± 0.81 days; hatchability was 78.611± 9.73%; larvae passed through five instars and total larval duration lasted 12 to 21 days; pupal stage varied from 10 to 17 days; and total life cycle took 44 to 66 days; longevity of male and female moths varied from 5.42± 1.28 and 8.52± 1.72 days, respectively.