Screening of rice varieties against yellow stem borer (Scirphophaga incertulas Walker) in Jharkhand Prasad Rabindra*, Hembrom Lakhindar, Sathi Sanjay Kumar1, Prasad Devendra Department of Entomology, Birsa Agricultural University, Kanke, Ranchi-834006 1SMS, KVK, West Singhbhum, Jaganathpur (Jharkhand) *Email: rabindraento@yahoo.co.in
Online published on 30 November, 2019. Abstract Field screening of 16 rice varieties conducted against yellow stem borer (Scirphophaga incertulas Walker) during Kharif 2011 and 2012 revealed that the varieties Kavya, BG-380-2, Suraksha, Lalat and IR-36 were most promising being resistant to yellow stem borer in the agro-climatic conditions of Jharkhand. Lalat recorded the highest grain yield of 40.60 and 44.20 q ha−1 during 2011 and 2012, respectively, which in turn remained at par with Abhishek (40.50 & 42.80 q ha−1), BG-380-2 (40.50 & 43.80 q ha−1), RD-202 (39.70 & 41.50 q ha−1) and IR-36 (36.50 & 38.70 q ha−1) during the respective years. The pooled mean yield of the two experimental years followed almost similar trends.Accordingly, the test varieties in terms of grain yield could be arranged in descending order of Lalat (42.40 q ha−1) > BG-380-2 (42.15q ha−1)> Abhishek (41.65 q ha−1)> RD-202 (40.60 q ha−1) >Sahbhagi (35.3 q ha−1)> Kavya (35.15 q ha−1) and remained statistically at par. The variety TN-1 which was found most prone to yellow stem borer attack, proved to be highly susceptible with significantly lowest yield of grains (25.65 q ha−1). Top Keywords Rice, yellow stem borer, relative resistance, yield. Top |