African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6071

Full Length Research Paper

Energy scenario, carbon efficiency, nitrogen and phosphorus dynamics of pearlmillet –mustard system under diverse nutrient and tillage management practices

  C. M. Parihar1*, R. N. Bhakar2, K. S. Rana2, M. L. Jat3, A. K. Singh1, S. L. Jat1, M. D. Parihar4 and S. Sharma1    
  1Directorate of Maize Research, Pusa Campus, New Delhi-110 012, India. 2Indian Agricultural Research Institute, New Delhi, India. 3Cropping System Agronomist, CIMMYT, India, New Delhi, India. 4CCSHAU, Hisar, India.
Email: [email protected]

  •  Accepted: 11 March 2013
  •  Published: 31 March 2013

Abstract

 

Under limited moisture conditions integrated nutrient management and conservation agriculture (CA) practices plays a vital role. Information on effect of integrated nutrient management (INM) with CA practices in pearlmillet (Pennisetum glaucum) –mustard (Brassica juncea) system is lacking.  The present experiment was conducted during 2005-06 and 2006-07 in rainy and winter seasons, at IARI, New Delhi, India to investigate the effect of INM and tillage on pearlmillet -mustard system under limited irrigation. Ridge and furrow (RF) sowing produced significantly higher carbon efficiency (CE), energy output, net returns and economic yield (3768 kg ha-1) of pearlmillet-mustard sequence. The application of 30 kg N + 30 kg P2O5 + FYM at 6 t/ha to pearlmillet produced significantly higher yield attributes, economic yield (3982 kg ha-1), energy output (194023 MJ ha-1) of the system and CE and net return (189.41 and 315.8 US$ ha-1) of pearlmillet and mustard individually over control, 30 kg N + 20 kg P2O5/ha and sole application of FYM at 6 t/ha. Direct application of 60 kg N + 40 kg P2O5/ha to mustard produced significantly higher yield attributes, economic yield (3692 kg ha-1), energy output (182097 MJ), net return (296.73 US$ ha-1) and CE (10.80 and 11.51 during both the years), over control and 30 kg N + 20 kg P2O5/ha. The application of INM with ridge furrow sowing increased available N and P contents in the soil. Whereas, the consumptive use, moisture use rates and moisture use efficiency were the highest under ridge furrow sowing of pearlmillet-mustard system.

 

Key words: Carbon efficiency, consumptive use, energy output, pearlmillet-mustard system, N and P balance, soil fertility.

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