Yield attributes and quality parameters of rice under different establishment methods and varieties with nitrogen levels under late sown conditions in Telangana state

Abstract

Delay in transplanting rice affects the agronomic characteristics including the growth duration, photosynthetic productivity and dry matter remobilization efficiency which affects the yield attributes like no: of panicles, no: of filled spikelets etc., and finally the grain yield. To identify the best establishment method, variety and nitrogen dosage under late sown conditions, a field experiment was carried out during kharif, 2017 on clay loam soil at Regional Agricultural Research Station, Polasa, Jagtial, Telangana. The experiment was laid out in a split plot design with three replications and twelve treatments with three main plots viz., M1: Sowing of nursery (July 20th) and transplanting of seedlings at 25 DAS (August 16th), M2: Direct seeding by Broadcasting on August 16th, M3: Direct seeding by Drum seeder on August 16th and four subplots viz., S1: RNR-15048 with 100% Recommended N, S2: RNR-15048 with 150% Recommended N, S3: JGL-18047 with 100% Recommended N and S4: JGL-18047 with 150% Recommended N.Higher number of spikelets panicle-1, number of filled grains panicle-1 and lower spikelet sterility percentage recorded with direct seeding with drum seeder. Significantly higher total number of spikelets panicle-1, number of filled grains panicle-1 and spikelet sterility were recorded with RNR-15048 at both levels of nitrogen over JGL-18047. Test weight was not significantly influenced by different crop establishment methods. It was significantly higher in JGL-18047 over RNR-15048 at both levels of nitrogen. Quality parameters were not significantly influenced by the different crop establishment methods. Between varieties, JGL-18047 recorded significantly higher hulling, milling and head rice recovery percentage over RNR-15048 at both levels of nitrogen.