Occurrence of Insect-Pest of Cluster Bean [Cyamopsis tetragonoloba (Linn.) Taubert] Associated with Meteorological Parameters in Gird Region of Madhya Pradesh, India

Abstract

Insects are a big threat in agriculture. To study about insect pests complex of the cluster bean, a field experiment conducted at Research Farm, Rajmata Vijyaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh during Kharif season 2022-23. The incidence of insect pests observed on kharif cluster bean, namely thrips, Megleurothrips distalis (karny), Jassid, Empoasca kerri (Pruthi) aphid, Aphis craccivora (Koch) and whiteflies, Acaudaleyrodes rachipora (Singh). Peak population of aphid, Jassid and whitefly were observed during 37th SMW (2nd week of September) (4.39, 5.74 and 5.67 individuals/leaf, respectively); while peak population of thrips were observed during 38th SMW (3rd week of September) (4.75 individuals/leaf), thrips peak population was observed 38th SMW (3rd week of August) (3.70 thrips/leaf). Population of aphid and Jassid showed positive significant correlation with rainfall (r= 0.505*) and (r= 0.498*), respectively. Population of aphid, jassid and whitefly showed highly significant positive correlation with minimum temperature (r= 0.684**), (r= 0.745**) and (r= 0.591*), respectively. Population of aphid, jassid, thrips and whitefly showed significant positive correlation with evening relative humidity (r= 0.606*), (r= 0.621*), (r= 0.511*) and (r= 0.498*).