Dept. of Agril. Entomology, College of Agriculture, Raichur-584101, India.
Light and pheromone trap catch analysis for seven years from 1987 to 1993 and comparison with 1994 and 1995 data indicated maximum activity of Helicoverpa armigera (Hb.) from October to December with peak on 50th standard week at Raichur, India. Trap catches preceded and succeeded by larval population and incidence on different crops. Egg population coincided with same week and one week after trap catches. Maximum and minimum temperature and rainfall recorded highly significant negative correlation whereas morning relative humidity showed positive significant correlation with trap catches.
