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https://hdl.handle.net/2440/73824
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dc.contributor.author | Noack, S. | - |
dc.contributor.author | McLaughlin, M. | - |
dc.contributor.author | Smernik, R. | - |
dc.contributor.author | McBeath, T. | - |
dc.contributor.author | Armstrong, R. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Plant and Soil: international journal on plant-soil relationships, 2012; 359(1-2):375-385 | - |
dc.identifier.issn | 0032-079X | - |
dc.identifier.issn | 1573-5036 | - |
dc.identifier.uri | http://hdl.handle.net/2440/73824 | - |
dc.description.abstract | BACKGROUND AND AIMS: Phosphorus (P) mineralisation from crop residues is usually predicted from total P or carbon: phosphorus (C: P) ratios. However, these measures have limited accuracy as they do not take into account the presence of different P species that may be mineralised at different rates. In this study P speciation was determined using solution 31P nuclear magnetic resonance (NMR) spectroscopy to understand the potential fate of residue P in soils. METHODS: Mature above-ground biomass of eight different crops sampled from the field was portioned into stem, chaff and seed. RESULTS: The main forms of P detected in stem and chaff were orthophosphate (25–75 %), phospholipids (10–40 %) and RNA (5–30 %). Phytate was the dominant P species in seeds, and constituted up to 45 % of total P in chaff but was only detected in minor amounts (<1 %) in stem residue. The majority (65– 95 %) of P in stems was water-extractable, and most of this was detected as orthophosphate. However, this includes organic P that may have been hydrolysed during the water extraction. CONCLUSIONS: This study indicates that the majority of residue P in aboveground plant residues has the potential to be delivered to soil in a form readily available to plants and soil microorganisms. | - |
dc.description.statementofresponsibility | Sarah R. Noack, Mike J. McLaughlin, Ronald J. Smernik, Therese M. McBeath and Roger D. Armstrong | - |
dc.language.iso | en | - |
dc.publisher | Kluwer Academic Publ | - |
dc.rights | © Springer Science+Business Media B.V. 2012 | - |
dc.source.uri | http://dx.doi.org/10.1007/s11104-012-1216-5 | - |
dc.subject | Phosphorus | - |
dc.subject | crop | - |
dc.subject | residues | - |
dc.subject | speciation | - |
dc.subject | organic P | - |
dc.subject | Inorganic P | - |
dc.title | Crop residue phosphorus: speciation and potential bio-availability | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/s11104-012-1216-5 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | McLaughlin, M. [0000-0001-6796-4144] | - |
dc.identifier.orcid | Smernik, R. [0000-0001-6033-5855] | - |
dc.identifier.orcid | McBeath, T. [0000-0001-6423-367X] | - |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest Environment Institute publications |
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