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Phosphorus stocks and flows in an intensive livestock dominated food system

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dc.contributor.author Rothwell, S.A.
dc.contributor.author Doody, Donnacha
dc.contributor.author Johnston, Christopher
dc.contributor.author Forber, K.J.
dc.contributor.author Cencic, O.
dc.contributor.author Rechberger, H.
dc.date.accessioned 2020-09-18T10:46:24Z
dc.date.available 2020-09-18T10:46:24Z
dc.date.issued 2020-07-31
dc.identifier http://hdl.handle.net/20.500.12518/176
dc.identifier.citation Rothwell, S. A., Doody, D. G., Johnston, C., Forber, K. J., Cencic, O., Rechberger, H. and Withers, P. J. A. (2020) ‘Phosphorus stocks and flows in an intensive livestock dominated food system’, Resources, Conservation and Recycling. Elsevier BV, 163, p. 105065. doi: 10.1016/j.resconrec.2020.105065. en_US
dc.identifier.issn 0921-3449
dc.identifier.uri https://doi.org/10.1016/j.resconrec.2020.105065
dc.description Publication history: Accepted - 21 July 2020; Published online - 31 July 2020. en_US
dc.description.abstract Current use and management of phosphorus (P) in our food systems is considered unsustainable and considerable improvements in the efficiency of P use are required to mitigate the environmental impact of poor P stewardship. The inherent low P use efficiency of food production from animals means food systems dominated by livestock agriculture can pose unique challenges for improving P management. This paper presents the results of a substance flow analysis for P in the Northern Ireland (NI) food system for the year 2017 as a case study for examining P stewardship in a livestock dominated agricultural system. Imported livestock feed was by far the largest flow of P into the NI food system in 2017 (11,700 t ± 1300 t) and P from livestock excreta the largest internal flow of P (20,400 ± 1900t). The P contained in livestock slurries and manures alone that were returned to agricultural land exceeded total crop and grass P requirement by 20% and were the largest contributor to an annual excess soil P accumulation of 8.5 ± 1.4 kg ha−1. This current livestock driven P surplus also limits the opportunities for P circularity and reuse from other sectors within the food system, e.g. wastewater biosolids and products from food processing waste. Management of livestock P demand (livestock numbers, feed P content) or technological advancements that facilitate the processing and subsequent export of slurries and manures are therefore needed. en_US
dc.description.sponsorship This paper was produced as part of the RePhoKUs project (The role of phosphorus in the sustainability and resilience of the UK food system) funded by BBSRC, ESRC, NERC, and the Scottish Government under the UK Global Food Security research programme. Funding was provided by Biotechnology and Biological Sciences Research Council (Grant No. BB/R005842/1). en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights © 2020 The Authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. en_US
dc.subject Phosphorus en_US
dc.subject Substance flow analysis en_US
dc.subject Food system en_US
dc.subject Livestock en_US
dc.subject Northern Ireland en_US
dc.title Phosphorus stocks and flows in an intensive livestock dominated food system en_US
dc.type Article en_US

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