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https://hdl.handle.net/2440/96541
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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 | 2014 | - |
dc.identifier.citation | Plant and Soil: international journal on plant-soil relationships, 2014; 378(1):125-137 | - |
dc.identifier.issn | 0032-079X | - |
dc.identifier.issn | 1573-5036 | - |
dc.identifier.uri | http://hdl.handle.net/2440/96541 | - |
dc.description.abstract | Background and aims: As plants approach maturity and start to senesce, the primary sink for phosphorus (P) is the seed but it is unclear how plant P status affects the resulting P concentration and speciation in the seed and remaining plant parts of the residues. This study was established to measure how P speciation in different parts of wheat and canola is affected by plant P status. Methods: Wheat and canola grown in the glasshouse were supplied three different P rates (5, 30 and 60 kg P ha−1 equivalent). At physiological maturity, plants were harvested and P speciation was determined for all plant parts (root, stem, leaf, chaff/pod and seed) and rates of P application, using solution 31P nuclear magnetic resonance (NMR) spectroscopy. Results: Phytate was the dominant form of P in seed whereas orthophosphate was the dominant form of P in other plant parts. The distribution of P species varied with P status for canola but not for wheat. The phytate content of wheat chaff increased from 10 to 45 % of total P as the P rate increased. Canola pods did not show a similar trend, with most P present as orthophosphate. Conclusions: Although minor differences were observed in P speciation across the three P application rates and plant parts, the effect of this on P cycling from residues into soil is likely to be relatively minor in comparison to the overall contribution of these residues to soil P pools. This glasshouse experiment shows the dominant P form in crop residues that is returned to soil after harvest is orthophosphate, regardless of plant P status. | - |
dc.description.statementofresponsibility | Sarah R. Noack, Mike J. McLaughlin, Ronald J. Smernik, Therese M. McBeath, Roger D. Armstrong | - |
dc.language.iso | en | - |
dc.publisher | Springer | - |
dc.rights | © Springer Science+Business Media Dordrecht 2014 | - |
dc.source.uri | http://dx.doi.org/10.1007/s11104-013-2015-3 | - |
dc.subject | Phosphorus | - |
dc.subject | Plant P status | - |
dc.subject | Residues | - |
dc.subject | Speciation | - |
dc.subject | Organic P | - |
dc.subject | Inorganic P | - |
dc.title | Phosphorus speciation in mature wheat and canola plants as affected by phosphorus supply | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/s11104-013-2015-3 | - |
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 3 |
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