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    Regional differences in phosphorus budgets in intensive soybean agriculture

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    2013 Riskin et al Phosphorus in three countries BioSci.pdf (229.6Kb)
    Date
    2013-01
    Author
    Riskin, Shelby H.  Concept link
    Porder, Stephen  Concept link
    Schipanski, Meagan E.  Concept link
    Bennett, Elena M.  Concept link
    Neill, Christopher  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5807
    As published
    https://doi.org/10.1525/bio.2013.63.1.10
    DOI
    10.1525/bio.2013.63.1.10
    Keyword
     Phosphorus; Fertilizer; Soybean; Agriculture; Environment 
    Abstract
    Fertilizer-intensive agriculture has been integral to increasing food production over the past half century but has been accompanied by environmental costs. We use case studies of phosphorus fertilizer use in the world’s most productive soybean-growing regions, Iowa (United States), Mato Grosso (Brazil), and Buenos Aires (Argentina), to examine influences of management and soil type on agriculture’s most prevalent phosphorusrelated environmental consequences: eutrophication and consumption of Earth’s finite phosphorus reserves. With increasing phosphorus inputs, achieving high yields on tropical soils with high phosphorus-binding capacity is becoming more common. This system has low eutrophication risks but increases demands on phosphorus supplies. In contrast, production in traditional breadbaskets, on soils with lower phosphorus-binding capacities, is being sustained with decreasing phosphorus inputs. However, in these regions, historical overuse of phosphorus may mean continued eutrophication risk even as pressures on phosphorus reserves diminish. We focus here on soybean production but illustrate how achieving sustainable agriculture involves an intricate optimization of local, regional, and global considerations.
    Description
    Author Posting. © American Institute of Biological Sciences, 2013. This article is posted here by permission of University of California Press for personal use, not for redistribution. The definitive version was published in BioScience 63 (2013): 49-54, doi:10.1525/bio.2013.63.1.10.
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    • Ecosystems Center
    Suggested Citation
    BioScience 63 (2013): 49-54
     

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