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    Nitrous oxide mitigation in UK agriculture

    Date
    2013
    Author
    Rees RM
    Baddeley JA
    Bhogal A
    Ball BC
    Chadwick DR
    Macleod M
    Lilly A
    Pappa VA
    Thorman RE
    Watson CA
    Williams JR
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    Abstract
    Nitrous oxide (N2O) makes the single largest contribution to greenhouse gas (GHG) emissions from UK and European Union agriculture. Ambitious government targets for GHG mitigation are leading to the implementation of changes in agricultural management in order to reduce these emissions (mitigation measures). We review the evidence for the contribution of those measures with the greatest mitigation potential which provide an estimated 4.3 tCO2e ha 1 y 1 GHG reduction in the UK. The mitigation options considered were: using biological fixation to provide nitrogen (N) inputs (clover, Trifolium), reducing N fertilizer, improving land drainage, avoiding N excess, fully accounting for manure/slurry N, species introduction (including legumes), improved timing of mineral fertilizer N application, nitrification inhibitors, improved timing of slurry and manure application, and adopting systems less reliant on inputs. These measures depend mostly on increasing the efficiency of N fertilizer use and improving soil conditions; however, they provide the added benefit of increasing the economic efficiency of farming systems, and can often be viewed as ‘‘win-win’’ solutions.
    Journal Title/Title of Proceedings
    Soil Science and Plant Nutrition
    Volume/Issue Number
    59
    Page Numbers
    3‐15
    URI
    http://hdl.handle.net/11262/8299
    http://dx.doi.org/10.1080/00380768.2012.733869
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