Budgeting phosphorus in medium and lower rainfall zones of southern NSW

Graeme Sandral, Ehsan Tavakkoli, T.M. McBeath, Roger Armstrong, Sean Mason, Nigel Wilhelm, Rebecca Hailing, Russell Pumpa, Kelly Fiske, Maryam Barati, David Armstrong

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

    Abstract

    Phosphorus (P) is a significant annual fertiliser input for crop production in southern NSW. The extensive history of P application and mostly adequate to high soil Colwell P values in this region allow many farmers some flexibility in managing P inputs, particularly where cash flow may be limited. The flexibility in P management is also made possible as crop uptake of P is primarily from the soil reserve with a smaller but important component coming from starter P applied at sowing. In this paper we discuss both P considerations after drought and P cycling and uptake.
    Original languageEnglish
    Title of host publication2020 Lake Cargelligo GRDC grains research update
    Place of PublicationAustralia
    PublisherGRDC
    Pages37-50
    Number of pages14
    Publication statusPublished - 11 Mar 2020
    EventGRDC Grains Research Update (Lake Cargelligo) - Lake Cargelligo Bowling Club, Lake Cargelligo, Australia
    Duration: 11 Mar 202011 Mar 2020
    https://grdc.com.au/events/list/submitted/grdc-grains-research-update-lake-cargelligo

    Conference

    ConferenceGRDC Grains Research Update (Lake Cargelligo)
    Abbreviated titleDriving Profit Through Research
    Country/TerritoryAustralia
    CityLake Cargelligo
    Period11/03/2011/03/20
    OtherNew research that’s ready for the paddock in 2020 at the Lake Cargelligo GRDC Grains Research Update. Discuss how to make practical use of the latest information with researchers, agronomists and leading growers.
    Topics:
    New frontiers in cereal breeding for a changing climate - long coleoptile wheat, crop competitive varieties, new wheat types for late sowing windows and adaptation to high temperature stress during grain fill. Greg Rebetzke (CSIRO)
    Drivers of yield stability in wheat and barley- picking a winner in variable seasons. David Burch (NSW DPI)
    Pulses in Lake Cargelligo farming systems. Tony Swan (CSIRO)
    Fixing more N by improving inoculant performance in suboptimal / acid soil conditions. Belinda Hackney (NSW DPI)
    Measuring, using and budgeting P in lower rainfall zones - are there options to spend less after a dry year? Graeme Sandral (NSW DPI) and Jim Laycock (Incitec Pivot)
    Lasers, machine learning, weed recognition software and new innovations in weed management. Guy Coleman (USyd)
    Risks and rewards of cover cropping - how effective are cover crops at increasing fallow efficiency and influencing soil health? What about the water they consume - how much do they use and is this offset by increased fallow efficiency? Col McMaster (NSW DPI)
    Decisions for a profitable 2020 - picking the right variety for the situation, managing P fertiliser cost, weed planning and cereal disease after the drought. Discussion session led by Andrew McFadyen (McFadyen Ag. Consulting), Col McMaster (NSW DPI), Graeme Sandral (NSW DPI) and Helen McMillan (CWFS)
    Internet address

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