Occurrence and Diversity of Insect Pests Attacking BU Mung Bean4

The study was conducted during March to June 2021 in the field and laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur to know the prevalence of the insect pests and their status on mung bean variety BU Mung- 4. In total 12 species of insects were found as pest, of which 4 species were hemipteran, 3 species were lepidopteran, 2 species were coleopteran, 2 species were dipteran, and one species was thysanopteran. Pod borer (84.4%), flea beetles (66.6%), thrips (48.8%), jassid (37.7%) and whitefly (25.2%) were found as major pests. Leaf miner, aphid, epilachna beetle, green stink bug, hairy caterpillar and stem fly were categorized as minor pests having 13.3%, 8.8%, 17.7%, 2.2%, 15.5%, 11.1% infestation, respectively. The pest insects were most abundant in middle April (94.9±6.1) when the plants were at seedling to pre-flowering. Both the richness and diversity of the insect pests were the maximum during early May (1.2±0.1 and 1.7±0.1, respectively). The abundance did not show any change in relation to temperature and relative humidity but influenced only by the growing stages of the crop.Ann. Bangladesh Agric. (2021) 25 (2) : 77-85