• 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

    In situ N2O emissions are not mitigated by hippuric and benzoic acids under denitrifying conditions

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    HA Paper DK_revised.pdf
    Size:
    460.4Kb
    Format:
    PDF
    Download
    Author
    Krol, Dominika cc
    Forrestal, Patrick J.
    Lanigan, Gary
    Richards, Karl G.
    Keyword
    Benzoic Acid
    Hippuric Acid
    N2O Mitigation
    Greenhouse gas
    Urine constituents
    Urine patches
    Denitrification
    Date
    29/12/2014
    
    Metadata
    Show full item record
    Statistics
    Display Item Statistics
    URI
    http://hdl.handle.net/11019/766; http://dx.doi.org/10.1016/j.scitotenv.2014.12.074; http://www.sciencedirect.com/science/article/pii/S0048969714017859
    Citation
    D.J. Krol, P.J. Forrestal, G.J. Lanigan, K.G. Richards. In situ N2O emissions are not mitigated by hippuric and benzoic acids under denitrifying conditions. Science of The Total Environment, 2015, 511, 362-368. DOI: 10.1016/j.scitotenv.2014.12.0
    Abstract
    Ruminant urine patches deposited onto pasture are a significant source of greenhouse gas nitrous oxide (N2O) from livestock agriculture. Increasing food demand is predicted to lead to a rise in ruminant numbers globally, which, in turn will result in elevated levels of urine-derived N2O. Therefore mitigation strategies are urgently needed. Urine contains hippuric acid and together with one of its breakdown products, benzoic acid, has previously been linked to mitigating N2O emissions from urine patches in laboratory studies. However, the sole field study to date found no effect of hippuric and benzoic acid concentration on N2O emissions. Therefore the aim of this study was to investigate the in situ effect of these urine constituents on N2O emissions under conditions conducive to denitrification losses. Unadulterated bovine urine (0 mM of hippuric acid, U) was applied, as well as urine amended with either benzoic acid (96 mM, U + BA) or varying rates of hippuric acid (8 and 82 mM, U + HA1, U + HA2). Soil inorganic nitrogen (N) and N2O fluxes were monitored over a 66 day period. Urine application resulted in elevated N2O flux for 44 days. The largest N2O fluxes accounting for between 13% (U) and 26% (U + HA1) of total loss were observed on the day of urine application. Between 0.9 and 1.3% of urine-N was lost as N2O. Cumulative N2O loss from the control was 0.3 kg N2O–N ha− 1 compared with 11, 9, 12, and 10 kg N2O–N ha− 1 for the U, U + HA1, U + HA2, and U + BA treatments, respectively. Incremental increases in urine HA or increase in BA concentrations had no effect on N2O emissions. Although simulation of dietary manipulation to reduce N2O emissions through altering individual urine constituents appears to have no effect, there may be other manipulations such as reducing N content or inclusion of synthetic inhibitory products that warrant further investigation.
    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.