The present experiment was conducted to study the seasonal profile of different insect-pests in blackgram ecosystem. On the basis of occurrence of insect pests, the pests observed regularly on weekly basis and causing appreciable visual damage up to the extent of 10 per cent or more were categorized as ‘major’ pests, whereas, insects which appeared irregularly for a short period and in low numbers were considered as ‘minor’ pests. Thirteen species of insect pests were observed to attack the blackgram var. IPU-43’ at different stages of crop growth in an overlapping manner.

Maximum number of 6 species belonged to the order Lepidoptera followed by Hemiptera (5 species), whereas, Diptera and Coleoptera shared with one species each constituting 46.15, 38.46, 7.69 and 7.69 per cent of the total pests on black gram, respectively.