AJAY KUMAR, N.L. DANGI, M.K. MAHLA, LEKHA AND G. CHHANGANI

Field experiments were conducted during season of 2018. The pest population was recorded in cluster bean field, population of aphid ( Koch), whitefly ( Gennadius), jassid ( Pruthi) and thrips ( karny) were recorded on cluster bean crop throughout the growing season. The incidence of aphid, jassid and whitefly were commenced in the second week of July. While the incidence of thrips commenced in third week of July. The population of aphid, jassid and thrips attained its peak during second week of August. While the population of white fly attained its peak during first week of August. Aphid, thrips and whitefly showed negative non significant correlation while jassid showed positive non significant correlation with temperature. Aphid, jassid and thrips showed negative non significant correlation and whitefly showed significant correlation with relative humidity. Aphid, jassid, thrips and whitefly showed negative significant correlation with rainfall.