Department of Entomology, College of Agriculture, Junagadh Agricultural University, Junagadh-362 001, India.
*E-mail: <mfacharya@yahoo.com>
The reproductive rate (Ro) of Helicoverpa armigera was 376.01 representing total female birth with a mean length of generation (Tc) 42.99 days was determined on cotton. The population increase with intrinsic rate of increase (rm) was 0.1379 and finite rate of increase (λ) was 1.1489 females/female/day. On reaching stable age distribution, the population comprised mainly of immature stages and further life at the time of adult emergence, was reduced from 16.38 to 1.75 days.
Gossypium hirsutum, Helicoverpa armigera, Life table
