Seasonal incidence of leaf webber (Orthaga euadrusalis walker) and its management

Studies on mango leaf webber (Orthaga euadrusalis Walker) with respect to seasonal incidence was conducted during the year 2021-22 and 2022-23 at farmer’s plot of different villages of Madhepura district of Bihar. Seasonal incidence data revealed that maximum leaf webber population in mango was observed from last fortnight of September to last fortnight of November ranged from 15.40 to 16.10 with highest 21.40 webs/tree in first fortnight of November. A gradual declined from 13.00 to 2.80 webs/tree was observed from first fortnight of December to second fortnight of January, respectively. The study was carried out in RBD and observations were recorded before spray and 15 DAS (Days After Spray). Data on management of leaf webber reflect that at 15 DAS of combination product (Acephate 45% + Cypermethrin 5%) @ 2g/L gave the best result in per cent reduction of web and larvae per tree. The pest incidence ranged between73.25 and 87.23and 83.34 and 83.61 during 2021-22 and 2022-23, respectively which was followed by Quinalphos 25EC @ 1.5ml/L. The management techniques given in this research paper would be a valuable resource for mango orchardist, researchers, and stakeholders involved in managing the mango leaf webber problem.