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Phosphorus fractions in arable and mountain soils and their humic acids

Author

Listed:
  • Gabriela Barančíková

    (Soil Science and Conservation Research Institute in Bratislava, regional station Prešov, Slovak Republic)

  • Tibor Liptaj

    (Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic)

  • Nadežda Prónayová

    (Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic)

Abstract

Soil phosphorus (P) can exist in various inorganic (Pi) and organic forms (Po). Specific determination of Pi can be obtained by fractionate methods. However, the discrimination between the chemically different forms of Po in soil is not simple. Nowadays, the method of choice for the determination of various soil inorganic and organic P compounds is 31P NMR. In this paper, the determination of various phosphorus forms (available P, total P, Pi and Po fractions) in arable and mountain soils is presented. Besides, the detailed characterisation of P compounds in humic acids (HA) is also shown. The results obtained show that the highest content of the available P can be found in arable soils with a high input of fertilisers, and that the predominant part of Pi is included in hardly soluble fractions, mainly in the soil types with neutral soil reaction. Our data also show the correlation between total P and Po, the dominant form of P in the topsoil of mountain soils. Phosphomonoesters represent the major types of P in HA structure. The correlations between phosphomonoesters of type I and some humification parameters of HA and qualitative parameters of soil organic matter suggest that higher amounts of more recalcitrant monoesters can be found in more mature soil organic matter with a higher humification degree.

Suggested Citation

  • Gabriela Barančíková & Tibor Liptaj & Nadežda Prónayová, 2007. "Phosphorus fractions in arable and mountain soils and their humic acids," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 2(4), pages 141-148.
    • Handle: RePEc:caa:jnlswr:v:2:y:2007:i:4:id:2111-swr
    DOI: 10.17221/2111-SWR
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    Cited by:

    1. Miriam Kizeková & Radoslava Kanianska & Ľubica Jančová & Jozef Čunderlík & Zuzana Dugátová, 2024. "Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia," Land, MDPI, vol. 13(2), pages 1-17, February.

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