Journal of Innovative Agriculture, Volume 3, Issue 2 : 20-24
Research Article

OPEN ACCESS | Published on : 27-Jun-2016

Potassium release and fixation capacity of representative soil series of sub-montane zone of maharashtra

  • M V V I Annapurna
  • M.Sc(Agri) student Soil Science and Agricultural Chemistry College of Agriculture Kolhapur.
  • B S Kadam
  • Assistant Professor Soil Science and Agricultural Chemistry College of Agriculture Kolhapur.

Abstract

The representative soil series of order Entisols, Inceptisols and Vertisols collected from agriculture college Kolhapur and different research stations of Sub-montane zone of Maharashtra were assessed for potassium release and fixation capacity. The K-fixation in different soils ranged from 78.80 mg kg-1 (Kurkum series of A.R.S., Vadgaon-Maval) to 276.40 mg kg-1 (Koregaon series of A.R.S., Karad). From the mean values, it was observed that Vertisols showed highest K fixation capacity followed by Inceptisols and Entisols. All the soil series were categorized as very low in step K except Koregaon series of A.R.S., Karad of Vertisols. The sub-surface horizon showed higher cumulative step K release than the surface horizon. The step K and constant rate K was highest in Vertisols followed by Inceptisols and Entisols.

Keywords

Potassium release and fixation, step K, constant K and Sub-montane zone

References

  • Haylock, O.F. (1956) A method for estimating the availability of non-exchangeable potassium. Transactions 6th International Congress of Soil Science. 8: 402-408.

    Mengel, K. and Kirkby E.S. (1987) Principles of plant nutrition.  International Potash Institute, Switzerland. pp. 655.

    Srinivasa Rao, Ch., Gupta, T.R., Subba Rao, A. and Bansal, S.K (2000) Potasium fixation characteristics of major benchmark soils of India J. Indian Soc. Soil Sci., 48(2): 220-            228.

    Subha Rao, Sesha, M.V.R. and Pal, S.K. (1993)  Non -exchangeable potassium reserve and their  categorization in some  soils of India J. Indian Soc. Soil Sci., 41(4): 667-673.

    Volk, N.J. (1934) the fixation of   potassium difficulty available  forms in soil. Soil Science. 37: 257-287.

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