Response of Semi-Dwarf Basmati Varieties of Rice (Oryza sativa L.) Under Direct Seeding to Combination of Organic Manure and Inorganic Fertilizer

Abstract

A field study was conducted in factorial randomized block design with three semi-dwarf varieties of basmati rice HB-2,PB-1121,PB-1509 and five treatments including [T1(Control),T2(100% RDN (Recommended dose of nitrogen) (90 kg N/ha through fertilizer)),T3(25% of nitrogen through vermi-compost + RDN 75% (through fertilizers),T4(50% of nitrogen through vermi-compost + RDN 50%(through fertilizers)),T5(75% of nitrogen through vermi-compost + RDN 25%( through fertilizers) In all plots a common dose of 30kg phosphorous ,30kg potash and 10kg zinc sulphate was applied].Results showed that Variety HB-2 showed better plant height(100.6), dry matter accumulation(1127.2), No. of tillers(309),No. of panicles/m2(279.5),Panicle length(28.9) and Grain yield(35.1). The leaf area index(4.40), No. of grains/ panicle(76.8), Test weight(28.0) and straw yield(71.9) was better in variety PB- 1121. Among treatments T3 showed better results for plant height(112.9),dry matter accumulation(1220.0), no .of tillers(316.1),leaf area index(4.47), no. of panicles/m2(305.2), no. of grains/panicle(86.6), panicle length(28.7), test weight(28.5) and yield attributes[grain yield(41.3) and straw yield(80.0)] it is therefore concluded that integrated nutrient management is better over fertilizer application.