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Split nitrogen application in spring to timothy-meadow fescue leys

  • Elisabet Nadeau
  • , Andrea Von Essen
  • , A.K. Bakken

    Publication: Chapter in Book/Report/Conference proceedingConference paper in proceedingspeer-review

    Abstract

    Climate change with fluctuations in weather patterns, environmental concerns, and increased costs of mineral fertilizers all demand adjustment of nitrogen (N) used for forage production. The aim of the study was to investigate the effects of splitting N application in spring on dry-matter (DM) yield, crude protein (CP) content and protein quality of timothy-meadow fescue leys. The trial was conducted during two years at three locations (Kvithamar and Særheim, Norway and Länghem, Sweden). Split N application with 60 kg N ha–1 at onset of grass growth in April and 50 kg N ha–1 in May resulted in the same DM yields and CP concentrations as a single application of 110 kg N ha–1 in April in Kvithamar the first year and Særheim both years. In Länghem both years and for Kvithamar in the second year, a late application two weeks before first cut gave less DM yield than the single full application in April. Split application did not affect the contents of nonprotein N or nitrate.
    Original languageEnglish
    Title of host publicationWhy grasslands? : Proceedings of the 30th General Meeting of the European Grassland Federation Leeuwarden, the Netherlands 9-13 June 2024
    PublisherBrill
    Pages575-577
    Number of pages3
    ISBN (Electronic)978-90-903-8494-8
    Publication statusPublished - 2024

    Publication series

    SeriesGrassland Science in Europe
    Number29

    Keywords

    • Festuca pratensis
    • N application strategy
    • Phleum pratense L.
    • maturity at harvest
    • protein
    • yield

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