Seasonal Incidence of Major Insect Pests of Green Gram and Management of Helicoverpa armigera Hubner on Using Bio-Pesticides

The field trial was conducted at Organic Research Farm, Kargua Ji, Department of Entomology, Institute of Agricultural Sciences Bundelkhand University, Jhansi (U.P.) during Kharif 2023 on green gram with following title “Seasonal incidence of major insect pests of green gram (Vigna radiata L.) and management of pod borer (Helicoverpa armigera Hubner) on using bio-pesticides” resulted that the seasonal incidence of the white fly started with the 30th SMW and the highest population reported in 35th SMW with 12.36 whitefly per plant and the spotted pod borer start infestation from 33rd SMW and reached peak population with 6.10 at 35th SMW, where the pod borer incidence first reported in 33rd SMW with 1.36 larvae per plant and maximum population was at 36th SMW with 3.57 larvae per plant more over the blister beetle start their infestation from 32nd week and maximum incidence was reported in 36th SMW with 2.61 beetle per plant. Where in the management of Helicoverpa armigera Hubner after first spray the Neem oil 5% (2.23) was found best effective followed by Bacillus thuringiensis 2.5 ml/l (3.13) and Beauveria bassiana 5 ml/l (3.33) therefore after second spray Bacillus thuringiensis 2.5 ml/l (1.73) treated plot showed minimum infestation of the larvae followed by Beauveria bassiana 5 ml/l, Neem oil 5%, (1.88) and (2.06), in all treatments the maximum reduction of the larval population of pod borer was found by Bacillus thuringiensis as per with Beauveria bassiana treated plots.