Journal of Pure and Applied MicrobiologyVol. 11 No. 2

Growth Efficiency, Productivity and Economics of Direct Seeded Rice as Influenced by Nitrogen Level and Weed Management

R.K.Tiwari1, Gaurav Mahajan1, Amit Jha2, S.K.Singh1 and S.K.Tripathi1

1Department of Agronomy, College of Agriculture, JNKVV, Rewa, Madhya Pradesh, India. 2College of Agriculture Jabalpur (M.P.), India.

Received on 10 March 2017 and accepted on 04 May 2017

 

ABSTRACT

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.