Phosphorus and phosphorus stratification

Graeme A. Sandral, Ehsan Tavakkoli, Roger Armstrong, Maryam Barati, Russell Pumpa, David Lester, Sean Mason, Rob Norton, Mike Bell

    Research output: Book chapter/Published conference paperConference paperpeer-review


    In the grains-growing areas of south-east Australia, the bulk of plant nutrients in labile form usually occurs in the topsoil, with much lower amounts present in the subsoil. It is becoming increasingly evident that in environments where the nutrient-rich topsoil is prone to drying, nutrient uptake by crops is likely to be adversely affected despite the availability of water in the subsoil. This is likely due to impeded root growth in the dry topsoil or reduced diffusion of immobile nutrients to plant roots or both. Despite the numerous studies on vertical nutrient stratification, there is still limited information on the effectiveness of subsoil nutrition on yield productivity and also the efficiency of nutrient use. This paper reviews P cycling and budgeting in grain production systems with an emphasis on P stratification and the resulting consequences it has on crop P demand.
    Original languageEnglish
    Title of host publicationGrains research update
    Subtitle of host publicationBoosting profitability - resilient solutions
    PublisherGrains Research and Development Corporation
    Number of pages10
    Publication statusPublished - 19 Feb 2019
    EventGRDC Grains Research Update - Charles Sturt University, Wagga Wagga, Australia
    Duration: 19 Feb 201920 Feb 2019 (program)

    Publication series

    NameGRDC Grains Research Update


    ConferenceGRDC Grains Research Update
    CityWagga Wagga
    Internet address


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