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    The fate of urine nitrogen: A grassland lysimeter study in Ireland

    Selbie, Diana; Cameron, Keith C.; Di, Hong J.; Moir, James L.; Lanigan, G. J.; Richards, K. G.
    Abstract
    In grazed pasture systems, the nitrogen (N) contained in a cattle urine patch may be up to 1200 kg N ha⁻¹. The majority of this N is in excess of plant requirements and is vulnerable to environmental loss. In this study, cattle urine was applied at five rates of nitrogen, 0, 300,500, 700 and 1000 kg N ⁻¹ soil monolith lysimeters in late autumn in Ireland. Measurements of gaseous N emissions, nitrate (NO₃⁻) leaching and pasture N uptake were made for a calendar year following urine application in two consecutive experiments. Increasing the rate of urine N applied increased the cumulative nitrous oxide (N₂O) emissions, NO₃⁻ leaching and pasture N uptake in years one and two, and the relationships were curvilinear with N recovery diminishing at the higher N rates.... [Show full abstract]
    Keywords
    nitrogen; cattle urine; lysimeter
    Fields of Research
    0503 Soil Sciences; 0703 Crop and Pasture Production; 079902 Fertilisers and Agrochemicals (incl. Application)
    Date
    2014-02
    Type
    Conference Contribution - published (Conference Paper)
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    • Department of Soil and Physical Sciences [509]
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    © FLRC and the Authors
    Citation
    Selbie et al. (2014). The fate of urine nitrogen: A grassland lysimeter study in Ireland. In L.D. Currie and C.L. Christensen (Eds.), Nutrient management for the farm, catchment and community: Occasional Report No.27. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. Retrieved from http://flrc.massey.ac.nz/workshops/14/Manuscripts/Paper_Selbie_2014.pdf
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