Indian Journal of Entomology

An on-farm trial on the assessment of IPM practices against rice yellow stem borer Scirphophaga incertulas (Walker) in rice was carried out at five locations at randomly selected farmers’ fields of KVK adopted villages of Scirphophaga incertulas (Walker) Nalgonda District, Telangana during rabi 2015-16, 2016-17 and 2017-18. The IPM practice consisted of seed treatment, nursery management, clipping off leaf tips before transplanting, application of recommended dosages of fertilizers, application of chlorantraniliprole granules @ 10 kg/ ha, the release of biocontrol agent Trichogramma japanicum @ 1,25,000/ ha at five releases from 20 DAT at an interval of 20 days, installation of pheromone traps @ 10/ ha, spraying of cartap hydrochloride 50SP @ 2.0 g/ l at the vegetative stage and chlorantraniliprole 18.5SC @ 0.3 ml/ l at the panicle initiation stage. The results on pest incidence like mean deadhearts were significantly lower in IPM demonstration plots (9.9%) than in farmers’ practice (17.7%) and the white earheads incidence was Scirphophaga incertulas (Walker) (9.0%) Scirphophaga incertulas (Walker) in IPM demonstration plots compared to 19.3% in farmers’ practice. The grain yield was higher in demonstration plots 6588.3 kg/ ha, with a increase of 12.0% over the farmers’ practice of 5913.3 kg/ ha. The gross returns, net returns, and benefit-cost were obtained more in IPM demonstrations as compared to farmers’ practices.