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    A life cycle assessment of annual, N fertilised perennial and non-N fertilised perennial pastures, South-Western Australia

    226847_226847.pdf (935.9Kb)
    Access Status
    Open access
    Authors
    Biswas, Wahidul
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Biswas, W. 2015. A life cycle assessment of annual, N fertilised perennial and non-N fertilised perennial pastures, South-Western Australia. International Journal of Agricultural Resources, Governance and Ecology. 11 (1): pp. 63-79.
    Source Title
    International Journal of Agricultural Resources, Governance and Ecology
    DOI
    10.1504/IJARGE.2015.069794
    ISSN
    1462-4605
    School
    Centre of Excellence in Cleaner Production
    URI
    http://hdl.handle.net/20.500.11937/18530
    Collection
    • Curtin Research Publications
    Abstract

    This research aims to assess the emissions of greenhouse gases (GHGs) from one kilogram of live weight cattle production from annual pastures, nitrogen (N) fertilised perennial pastures and non-N fertilised perennial pastures in Western Australia for different farming practices. Using streamlined life cycle assessment (SLCA) methodology, it was estimated that approximately 14.30 kg, 12.09 kg and 11.0 kg of CO2-e of GHG emissions will be emitted from the production of one kilogram of live weight cattle from annual, non-N fertilised and N fertilised perennial pastures respectively. Enteric emissions account for a significant portion of GHG emissions (85% from annual pasture and around 95% from perennial pastures). Live weight yields from annual pasture emit more GHG emissions than do N fertilised and non-N fertilised perennial pastures. Although the inclusion of liming produces additional GHG emissions, the increase in productivity associated with these activities can actually offset GHG emissions when considered on a per kilogram basis.

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