Supplement feeding on a mixture of sugar, pollen and soyabean flour increased brood development of honeybee Apis mellifera L. Up to 40% in the dearth period (August, September) as compared to non-feeding colonies. An increase of 53% of brood development was found in the colonies placed on sarsoon flora as against colonies placed on common flora during January, February. Mean maximum controlled temperature and mean humidity ranging from 30 to 34°C and to 67% during June to August increased brood development up to 18% as compared to ambient temperature and humidity (37°C-41°C and 74 to 98%). Double queen colonies produced 10% more brood than single queen colonies during June to August.