0973-7510 Journal of Pure and Applied Microbiology 2581-690X DR. M.N. Khan 10.22207/JPAM.11.2.41 Growth Efficiency, Productivity and Economics of Direct Seeded Rice as Influenced by Nitrogen Level and Weed Management Tiwari R.K Mahajan Gaurav Jha Amit Singh S.K Tripathi S.K Department of Agronomy, College of Agriculture, JNKVV, Rewa, Madhya Pradesh, India. College of Agriculture Jabalpur (M.P.), India. 30 06 2017 11 2 987 991 Copyright © 2017 The Author(s) 2017 This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.https://creativecommons.org/licenses/by/4.0/

Field experiment conducted at College of Agriculture, Rewa, Madhya Pradesh revealed that plant height, number of tillers/m2, leaf area index (LAI), dry matter accumulation (DMA) in plants, Crop growth rate (CGR) and net assimilatory rate (NAR) were higher in plots getting hand weeding twice and with application of 125 kg N/ ha (N3) as compared to lower levels of nitrogen application and other weed management practices, whereas, application of butachlor + dhaincha (1:1) + 1hand weeding had comparatively surpassed other weed management practices. Similarly, yield attributes were significantly higher in hand weeding twice with application of butachlor + dhaincha (1:1) + 1 hand weeding . Highest (1.77) net B:C ratio was captured with application of butachlor + dhaincha (1:1) + 1hand weeding and lowest (0.87) under weedy check.

Keywords Direct seeded rice Economics Nitrogen level Weed management