Vol. 15 No. 3
Performance of medium duration rice varieties to varying levels of fertility and split application of nitrogen
Author(s): R. PATTNAIK, M.R SATAPATHY, K. SETHI AND S.N. JENA
Abstract: An experiment was conducted in kharif, 2017 to study the responses of medium duration rice varieties with different levels of fertility and split application of nitrogen at the Agronomy Main Research Station, Odisha University of Agriculture and Technology, Bhubaneswar. Two levels of fertility (100:50:50 kg application of N:P2O5:K2O ha-1 and 80:40:40 application of N:P2O5:K2O ha-1) each with two different splitting schedules of nitrogen (¼ basal + ½ tillering + ¼ PI) and (¼ basal + ½ tillering + 1/8 PI+ 1/8 flowering) were allotted to the main plots and the sub-plots were assigned with four rice varieties (Hasanta, Mrunalini, Asutosh and Swarna) in split-plot design having three replications. Yield attributing characters like panicle number m-2, fertile grains panicle-1,1000 grain weight etc. were more at 100:50:50 kg application of N:P2O5:K2O ha-1 fertiliser dose with nitrogen application in four splits that resulted in maximum grain yield (4.87 ton ha-1) and straw yield (7.2 ton ha-1). Among varieties, Mrunalini observed with maximum grain yield (5.06 ton ha-1), straw yield (7.41 ton ha-1),nutrient uptake (NPK), net yield (Rs. 42.765 ha-1) and benefit: cost ratio (2.66).
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