Issue

Vol. 28 No. 9 (2016): Vol 28 Issue 9

Copyright (c) 2016 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Phosphorus Fractions in Soils of Transect of Kohora Watershed of Assam, India

https://doi.org/10.14233/ajchem.2016.19868
Seema Bhagowati
Department of Soil Science, Assam Agricultural University, Jorhat-785 013, India
K.N. Das
Department of Soil Science, Assam Agricultural University, Jorhat-785 013, India

Corresponding Author(s) : K.N. Das

daskn388@gmail.com

Asian Journal of Chemistry, Vol. 28 No. 9 (2016): Vol 28 Issue 9

Abstract

The forms of phosphorus in some surface soils representing various land forms viz. hillock top (crest 0-5 % slope), upper slope (30-35 % slope), middle slope (15-30 % slope), lower slope (10-15 % slope), flatter land (moderately sloping, 5-10 % slope), upland (gently sloping, 2-5 % slope), medium land (very gently sloping, 1-3 % slope) and low land (level to nearly level, 0-1 % slope) in a transect of Kohora watershed of Karbi Anglong district of Assam, India were studied. All the soils were acidic in reaction having variation in soil texture from skeletal sandy clay to sandy clay. Total free Fe2O3 + Al2O3, Ald and Fed of these soils were quite high and showed an increasing trend downward the transect along with clay. The study revealed that the sequential occurrence of various inorganic phosphorus fractions followed the order: Fe-P > Al-P > Organic-P > Res-P > Ca-P. Average inorganic phosphorus fractions as a constituent of total phosphorus in these soils was in the following order: Fe-P (29 %) > Al-P (27 %) > Organic-P (23 %) > Res-P (12 %) > Ca-P (3 %). Both Al-P and Fe-P were significantly correlated with Fed, Ald and Fe2O3 + Al2O3 and negatively with pH, Bray’s I-P, Bray’s II-P and Olsen’s-P. Olsen’s reagent extracted the highest amount of available phosphorus (15.38 to 24.21 mg Kg-1) followed by Bray’s-II (13.29 to 23.35 mg Kg-1) and Bray’s-I (12.39 to 21.35 mg Kg-1). Both Al-P and Fe-P were the major contributing phosphorus fractions to the total and available phosphorus pool and phosphate nutrition to crop plants. Distribution of various fractions of phosphorus in soils of the watershed was the functions of local (micro) variations in land forms rather than interrelationship of phosphorus fractions.

Keywords

Phosphorus fractions Watershed transect
Bhagowati, S., & Das, K. (2016). Phosphorus Fractions in Soils of Transect of Kohora Watershed of Assam, India. Asian Journal of Chemistry, 28(9), 2009–2012. https://doi.org/10.14233/ajchem.2016.19868
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. J.J.J. Lacerda, A.E.F. Neto, A.V. Resende, J.Z.L. Santos, L.F. Carneiro and C.H.C. de Oliveira, Afric. J. Agric. Res., 8, 3454 (2013); doi:10.5897/AJAR2013.6855.
  2. A.O. Ojo, M.T. Adetunji, K.A. Okeleye and C.O. Adejuyigbe, Int. J. Plant Soil Sci., 3, 71 (2014); doi:10.9734/IJPSS/2014/5539.
  3. D. Curtin, J.K. Syers and N.S. Bolan, Aust. J. Soil Res., 31, 137 (1993); doi:10.1071/SR9930137.
  4. J.O. Agbenin and H. Tiessen, Soil Sci., 157, 36 (1994); doi:10.1097/00010694-199401000-00006.
  5. V.D. Quang, V.C. Thai, T.T.T. Linh and J.E. Dufey, Eur. J. Soil Sci., 47, 113 (1996); doi:10.1111/j.1365-2389.1996.tb01378.x.
  6. J. Gerke, Commun. Soil Sci. Plant Anal., 23, 601 (1992); doi:10.1080/00103629209368612.
  7. D.N. Chakravarty, J.L. Sehgal and G. Dev, J. Res. Assam Agric. Univ., 1, 153 (1980).
  8. U.K. Mishra and H. Seithantuaanga, J. Indian Soc. Soil Sci., 48, 437 (2000).
  9. R.N. Patiram Rai and R.N. Prasad, J. Indian Soc. Soil Sci., 38, 237 (1990).
  10. M.L. Jackson, Soil Chemical Analysis, Prentice Hall of India Pvt. Limited, New Delhi (1973).
  11. S.C. Chang and M.L. Jackson, Soil Sci., 84, 133 (1957); doi:10.1097/00010694-195708000-00005.
  12. G.W. Petersen and R.B. Corey, Soil Sci. Soc. Am. Proc., 30, 563 (1966); doi:10.2136/sssaj1966.03615995003000050012x.
  13. A.L. Page, R.H. Miler and D.R. Keeney, Methods of Soil Analysis, Part 2, Chemical and Microbiological Properties, Agronomy 9: Soil Sci. Soc. Am., Madison, USA, edn 2 (1982).
  14. N.C. Mehta, J.O. Legg, C.A.I. Goring and C.A. Black, Soil Sci. Soc. Am. Proc., 18, 443 (1954); doi:10.2136/sssaj1954.03615995001800040023x.
  15. R.H. Bray and L.T. Kurtz, Soil Sci., 59, 39 (1945); doi:10.1097/00010694-194501000-00006.
  16. S.R. Olsen, C.V. Cole, F.S. Watanabe and L.A. Dean, Circ.US Dept. Agric., vol. 939, p. 19 (1954).
  17. J. Murphy and J.P. Riley, Anal. Chim. Acta, 27, 31 (1962); doi:10.1016/S0003-2670(00)88444-5.
  18. F.S. Watanabe and S.R. Olsen, Soil Sci. Soc. Am. Proc., 29, 677 (1965); doi:10.2136/sssaj1965.03615995002900060025x.
  19. O.P. Mehra and M.L. Jackson, Proceedings of 7th National Conference on Clays and Clay Minerals, Paragon press, New York, pp. 317-327 (1960).
  20. L.F. Seats and H.B. Peterson, in ed.: F.E. Bear, Chemistry of the Soil, Oxford and IBH Publishing Co. New Delhi, pp. 292-314 (1964).
  21. G.H. Bolt, in eds.: G.H. Bolt and M.G. Bruggenwert, Soil Chemistry: Basic Elements, Elsevier, Amsterdam, The Netherlands, pp. 91-95 (1976).
  22. U. Schwertmann, Nature, 212, 645 (1966); doi:10.1038/212645b0.
  23. O.P. Singh and B. Datta, J. Indian Soc. Soil Sci., 35, 699 (1987).
  24. G.W. Thomas and D.E. Peaslee, in eds.: L.M. Walsh and J.D. Beaton, Soil Testing and Plant Analysis, Soil Sci. Soc. Am., Madison, Wisconsin, USA (1973).
  25. J. Torrent, Soil Sci. Soc. Am. J., 51, 78 (1987); doi:10.2136/sssaj1987.03615995005100010016x.
  26. O.K. Borggaard, S.S. Jdrgensen, J.P. Moberg and B. Raben-Lange, J. Soil Sci., 41, 443 (1990); doi:10.1111/j.1365-2389.1990.tb00078.x.
  27. T. Chand and N.K. Tomar, J. Indian Soc. Soil Sci., 43, 24 (1995).
  28. K.N. Das, Ph. D. Thesis, Phosphate Sorption, Its Mechanism and Relationship with Soil Properties. C.C.S. Haryana Agricultural University, Hisar, India (1999).
  29. O.O. Akinremi, N. Armisen, M.A. Kashem and H.H. Janzen, Commun. Soil Sci. Plant Anal., 34, 2981 (2003); doi:10.1081/CSS-120025220.
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0