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    Relationship between phosphorus in organic growing media and its uptake by ryegrass

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    Authors
    Kelay, Asha
    Harris, P. J. C.
    Bateman, M. J.
    Issue Date
    2010
    
    Metadata
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    Abstract
    The supply of nutrients to plants from organic growing media depends on mineralization as the addition of inorganic nutrients is forbidden in certified organic systems. The objective of this study was to determine the relationship between total phosphorus (P), extractable (Olsen’s) P, organic P, and biomass P in growing media and uptake of P by ryegrass. Three proprietary products were used alone and combined in 1:2 and 2:1 proportions to give nine growing media. Perennial ryegrass (Lolium perenne L. cv. ‘Choice’) was irrigated with a modified Hoagland’s solution minus P, and the shoots were harvested after 28, 56, and 84 days. There was no significant correlation between the amounts of the different forms of P in the growing media and ryegrass dry weight or P concentration in harvested grass. However, total ryegrass P uptake was significantly positively correlated with initial total P and organic P in the growing media.
    Citation
    Communications in Soil Science and Plant Analysis, 41(1) : 98-107
    Publisher
    Taylor & Francis
    Journal
    Communications in Soil Science and Plant Analysis
    URI
    http://hdl.handle.net/2436/92381
    DOI
    10.1080/00103620903360304
    Additional Links
    http://dx.doi.org/10.1080/00103620903360304
    Type
    Journal article
    Language
    en
    ISSN
    00103624
    15322416
    ae974a485f413a2113503eed53cd6c53
    10.1080/00103620903360304
    Scopus Count
    Collections
    Faculty of Science and Engineering

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