Insect Pests of Heat Tolerant Country Bean (Lablab perpureus L.) in Bangladesh

Abstract

This study was conducted during summer season to know the prevalence of insect pests in heat tolerant country bean (IPSA Seem 2) field. Insect prevalence was recorded from early vegetative to reproductive stage. During the study period, Bean pod borer, Maruca vitrata Gey (Crambidae: Lepidoptera); Cotton ballworm, Helicoverpa armigera Hub (Noctuidae: Lepidoptera); Leaf eating caterpillar, Plusia oricalchea Fab (Noctuidae: Lepidoptera); Hairy caterpillar, Spilarctia obliqua Wal (Erebidae: Lepidoptera); Green semilooper, Chrysodeixis acuta Fab (Noctuidae: Lepidoptera); Bean shoot borer, Crocidosema aporema Wals (Tortricidae: Lepidoptera); Aphid, Aphis craccivora Koch (Aphididae: Hemiptera); Lablab bug, Coptosoma cribrarium Fab (Plataspididae: Hemiptera); Bean bug, Riptortus pedestris Fab (Alydidae: Hemiptera); Southern green stink bug, Nezara viridula Lin (Pentatomidae: Hemiptera); Brown stink bug, Euschistus servus Say (Pentatomidae: Hemiptera); Brown marmorated stink bug, Halyomorpha halys Stal (Pentatomidae: Hemiptera); Hooded hopper, Leptocentrus Taurus Fab (Membracidae: Hemiptera); Leaf beetle, Madurasia obscurella Jacoby (Chrysomelidae: Coleoptera) and Leaf weevil, Blosyrus oniscus Oliv (Curculionidae: Coleoptera) were identified. There were differences in the prevalence of these insects at different growth stages. However, very few insects were commonly present in all growth stages of country bean.