• Login
    View Item 
    •   T-Stór
    • Crops, Environment & Land Use Programme
    • Environment, Soils & Land Use
    • View Item
    •   T-Stór
    • Crops, Environment & Land Use Programme
    • Environment, Soils & Land Use
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of T-StórCommunitiesPublication DateAuthorsTitlesSubjectsFunderThis CollectionPublication DateAuthorsTitlesSubjectsFunderProfilesView

    My Account

    LoginRegister

    Information

    Deposit AgreementLicense

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    An evaluation of urine patch simulation methods for nitrous oxide emission measurement

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Forrestal JAs Evaluation of urine ...
    Size:
    877.6Kb
    Format:
    PDF
    Download
    Author
    Forrestal, Patrick J.
    Krol, Dominika cc
    Lanigan, Gary
    Jahangir, Mohammad M. R.
    Richards, Karl G.
    Keyword
    Nitrous oxide
    Urine patch
    Denitrification
    pasture range paddock
    Date
    28/11/2016
    
    Metadata
    Show full item record
    Statistics
    Display Item Statistics
    URI
    http://hdl.handle.net/11019/1121
    Citation
    FORRESTAL, P., KROL, D., LANIGAN, G., JAHANGIR, M., & RICHARDS, K. (2016). An evaluation of urine patch simulation methods for nitrous oxide emission measurement. The Journal of Agricultural Science, 1-8. doi:10.1017/S0021859616000939
    Abstract
    Global nitrous oxide (N2O) inventory estimates for pasture systems are refined based on measurements of N2O loss from simulated urine patches. A variety of methods are used for patch simulation but they frequently use a uniform wetted area (UWA), often smaller than a bovine urine patch. However, natural patches follow non-uniform infiltration patterns expanding naturally from a point of deposit with a non-wetted zone of influence. Using 2 litres of urine the UWA method was compared, using a 0·156 m2 collar, with a naturally expanding effective area (NEEA) method, using a 0·462 m2 collar under high (HL) and low (LL) N2O loss conditions. The method chosen affects urine nitrogen (N) loading to the soil. Under HL the UWA method induced a N2O-N loss of 280·6 mg/patch, significantly less than the 434·8 mg/patch loss for the NEEA method, for the same simulated urination. Under LL there was no method effect. Efforts should be made to employ patch simulation methods, which mimic natural deposits and can be achieved, at least in part, by: (a) Using a urine volume and N content similar to that of the animal of interest. (b) Allowing natural infiltration of the chosen urine volume to permit tapering towards the edges. (c) Measuring from the zone of influence in addition to the wetted area, i.e. the patch effective area.
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.1017/S0021859616000939
    Scopus Count
    Collections
    Environment, Soils & Land Use
    Environment, Soils & Land Use
    Environment, Soils & Land Use

    entitlement

     
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.