Methods for assessing laterally-resolved distribution, speciation and bioavailability of phosphorus in soils

Frederik J.T. van der Bom*, Peter M. Kopittke, Nelly S. Raymond, Ryo Sekine, Enzo Lombi, Carsten W. Mueller, Casey L. Doolette

*Corresponding author af dette arbejde

    Publikation: Bidrag til tidsskriftReviewForskningpeer review

    18 Citationer (Scopus)

    Abstract

    Supply of phosphorus (P) as an agricultural input depends on a limited mineral rock phosphate reserve, but inefficient use means this resource is not being used sustainably. Moreover, losses of P from historically accumulated soil reserves can cause substantial environmental harm. Development of sustainable P management will require optimization of P use efficiency, with this needing a better understanding of the distribution and chemical behaviour of P in soils, including both P applied as a fertilizer and native P. In this review, we discuss in-situ methods for microscopic mapping of P distribution, speciation and plant-available P fractions in soils, including scanning electron microscopy-based energy-dispersive X-ray spectroscopy, nanoscale secondary ion mass spectroscopy, X-ray fluorescence microscopy (and associated X-ray absorption spectroscopy), Raman and infrared spectroscopies, diffusive gradients in thin films coupled with laser ablation inductively coupled plasma mass spectrometry or colorimetry, and autoradiography. These methods can complement the traditional (bulk) methods for P analysis as well as deliver valuable information in their own right or in conjunction as part of an imaging cascade. We compare the merits and limitations of these techniques, which can serve to play a key role in answering questions about P behaviour in soil, from the microscopic to macroscopic scale, and provide some examples of how they may support researchers in their particular research.

    OriginalsprogEngelsk
    TidsskriftReviews in Environmental Science and Biotechnology
    Vol/bind21
    Sider (fra-til)53–74
    Antal sider22
    ISSN1569-1705
    DOI
    StatusUdgivet - 2022

    Bibliografisk note

    Publisher Copyright:
    © 2022, The Author(s), under exclusive licence to Springer Nature B.V.

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