Investigations were carried out on biology of ear head worm, Helicoverpa armigera (Hub.) in pearl millet at Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar during the year 2011. External features of all the stages were described and length and width of all the stages were measured and reported. | Biology of pearl millet ear head worm, Helicoverpa armigera under laboratory condition