Optimisation of N fertilisation in Italian ryegrass (Lolium multiflorum L.) seed production

Thijs Vanden Nest, Tim Vleugels, Alex De Vliegher, Georges Rijckaert

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureC1: Artikels in proceedings van wetenschappelijke congressen, die niet inbegrepen zijn in A1, A2, A3 of P1

    Uittreksel

    For most crops, N fertiliser advice is available and increasingly used among farmers in Belgium. The N fertilisation of Italian ryegrass (Lolium multiflorum L.) for seed production is based on farmer’s experience as little field trial information is available to define a fertiliser recommendation. Eight field trials (2008 - 2015) were conducted in sandy loam soil to determine optimal N fertilisation. Logistic modelling revealed that maximum seed yield can be obtained when 141 kg N ha-1 is available (N mineralisation + fertilisation). This corresponds to an average fertilisation of 92 kg N ha-1 after the forage cut, either in a single application or as a split application. In a split application, 60 kg N ha-1 should be fertilised after the forage cut and additional N should be supplied when the NNI (nitrogen nutrition index) at the two to three node stage (BBCH 32 - 33) is below the critical point (0.83).
    TaalEngels
    TitelSustainable meat and milk production from grasslands : Proceedings of the 27th general meeting of the European Grassland Federation
    UitgeverijWageningen Academic Publishers
    Datum17-jun-2018
    Pagina's369-371
    ISBN van geprinte versie978-1-84170-643-6
    ISBN van elektronische versie978-1-84170-644-3
    StatusGepubliceerd - 17-jun-2018
    Evenement27th General meeting of the European Grassland Federation - Cork, Ierland
    Duur: 17-jun-201821-jun-2018
    http://www.egf2018.com
    http://www.egf2018.com
    http://www.egf2018.com
    http://www.egf2018.com

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