Efficacy of eco-friendly plant products against tur pod borer, Helicoverpa armigera (Hubner) infesting pigeonpea under laboratory conditions

Abstract

The present experiment was conducted to test the efficacy of some bioformulations against tur pod borer, Helicoverpa armigera at the laboratory of the department of Entomology, College of Agriculture, IGKV, Raipur, Chhattisgarh, during 2023-25. Observations were recorded after 24, 48 and 72 hours after treatment (HAT). The result at 24 HAT revealed 30.00 percent corrected mortality in neem seed kernel extract and was found to be the best treatment which was on par with neemastra recording 20.00 percent corrected mortality. Highest repellency (85.00%) was recorded in agniastra followed by neemastra (80.00%). The observations recorded at 48 HAT revealed highest corrected mortality (30.00%) recorded in bramhastra followed by neem oil (25.00%) and highest repellency (70.00%) percent recorded in neemastra followed by neem seed kernel extract (65.00%). After 72 HAT, corrected mortality (65.00%) was recorded in agniastra followed by neem seed kernel extract (55.00%) and highest repellency was recorded in neemastra (50.00%).