Evaluation of Bio Pesticide For Management Of Insect-Pests Complex With Safety To Natural Enemies Oil Seed Crops Brassica Spp. (L.) Of North Eastern Up

Abstract

Field experiments were conducted in six locations at farmer’s fields of Captainganj and
Ramkola, block in KushiNagar district to evaluate the performance of biopesticide, Metarhzium
anisopliae including other components (IPM field) against insect-pests and natural enemies in
mustard. Result revealed that the IPM field proved to be effective with lowest incidence of major
insect-pests viz., aphid (Lipaphis erysimi), sawfly (Athalia lugens proxima), painted bug (Bagrada
cruciferarum) and leaf miner (Phytomyza horticola) with higher grain yield and monetary benefit as
comparison to Non IPM field. The maximum yield was recorded in IPM 15.28q/ha) than Non IPM
(13.23 q/ha) field. The IPM field was ultimately the promising one with better net return (Cost benefit
ratio 1:2.43) than Non IPM (Cost benefit ratio 1:1.99). The population of natural enemies viz., lady
bird beetles, Syrphid fly and preying spider and honey bee over non-IPM plot. Therefore, the IPM
technology used was not only directly environment friendly but also more sustainable vide increase in
biodiversity (natural enemies, soil flora & fauna).

Key words: Mustard, IPM module, Metarhziumsp., Insect Pests, predators, grain yield.