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Modelling N mineralization from green manure and farmyard manure from a laboratory incubation study

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  • Mohanty, M.
  • Reddy, K. Sammi
  • Probert, M.E.
  • Dalal, R.C.
  • Rao, A. Subba
  • Menzies, N.W.

Abstract

Predicting N mineralization from organic manures like farmyard manure (FYM) is more difficult than from fresh organic materials like crop residues, as the manures vary greatly in composition. A laboratory incubation experiment was carried out for 98 days at 30°C under aerobic conditions to study the effects on N dynamics of Gliricidia (Gliricidia sepium, Jacquin) and FYM application to soil at 5 and 10gkg−1. Application of Gliricidia induced N mineralization from the start of incubation period, with the amount of N mineralized increasing with rate of application. In contrast, application of FYM resulted in immobilization of mineral N in soil, irrespective of the rate of application. The initial net immobilization from FYM was limited by availability of N in the soil for the higher rate of application.

Suggested Citation

  • Mohanty, M. & Reddy, K. Sammi & Probert, M.E. & Dalal, R.C. & Rao, A. Subba & Menzies, N.W., 2011. "Modelling N mineralization from green manure and farmyard manure from a laboratory incubation study," Ecological Modelling, Elsevier, vol. 222(3), pages 719-726.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:3:p:719-726
    DOI: 10.1016/j.ecolmodel.2010.10.027
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    1. Unknown, 2004. "Modelling Nutrient Management in Tropical Cropping Systems," ACIAR Proceedings Series 135389, Australian Centre for International Agricultural Research.
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    1. Mohanty, M. & Sinha, Nishant K. & Somasundaram, J. & McDermid, Sonali S. & Patra, Ashok K. & Singh, Muneshwar & Dwivedi, A.K. & Reddy, K. Sammi & Rao, Ch. Srinivas & Prabhakar, M. & Hati, K.M. & Jha, , 2020. "Soil carbon sequestration potential in a Vertisol in central India- results from a 43-year long-term experiment and APSIM modeling," Agricultural Systems, Elsevier, vol. 184(C).

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