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dc.contributor.authorGoloran, JB
dc.contributor.authorChen, CR
dc.contributor.authorPhillips, IR
dc.contributor.authorXu, ZH
dc.contributor.authorCondron, LM
dc.date.accessioned2017-05-03T11:31:29Z
dc.date.available2017-05-03T11:31:29Z
dc.date.issued2014
dc.identifier.issn0032-079X
dc.identifier.doi10.1007/s11104-013-1900-0
dc.identifier.urihttp://hdl.handle.net/10072/67668
dc.description.abstractBackground and aims Soil phosphorus (P) indices that have been originally developed and applied to agricultural soils for predicting P uptake by plants were examined in a pot experiment to determine the most suitable index for P availability in bauxite-processing residue sand (BRS). Methods Pot trials with ryegrass were established using BRS that had been amended with various organic (greenwaste compost, biochar and biosolids) and inorganic (zeolite) materials and different levels of di-ammonium phosphate fertiliser. Soil P availability indices tested included anion-exchange membrane (AEM-P), 0.01 M calcium chloride (CaCl2-P), Colwell-P, and Mehlich 3-P. Results AEM-P was found to most closely reflect the available P status in BRS across all treatments, and had the strongest associations with plant P uptake compared to Colwell-P, Mehlich 3-P and CaCl2-P. AEM-P was more closely correlated with P uptake by ryegrass than other P indices, while Colwell-P was closely related to leaf dry matter. Interestingly, a strong inverse relationship between plant indices and pH in BRS growth media was observed, and an adequate level of plant P uptake was found only in 15 year-old rehabilitated BRS with pH <?8.0. Conclusions AEM-P was found to be the most suitable index for evaluating P availability in highly alkaline BRS and pH was an important parameter affecting uptake of P by ryegrass. Importantly, time is required (> 5 years) before improved uptake of P by plants can be observed in rehabilitated residue sand embankments.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer
dc.publisher.placeNetherlands
dc.relation.ispartofstudentpublicationY
dc.relation.ispartofpagefrom565
dc.relation.ispartofpageto578
dc.relation.ispartofissue1-2
dc.relation.ispartofjournalPlant and Soil
dc.relation.ispartofvolume374
dc.rights.retentionY
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchSoil chemistry and soil carbon sequestration (excl. carbon sequestration science)
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchAgricultural, veterinary and food sciences
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode410604
dc.subject.fieldofresearchcode31
dc.subject.fieldofresearchcode30
dc.titlePlant phosphorus availability index in rehabilitated bauxite-processing residue sand
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.hasfulltextNo Full Text
gro.griffith.authorXu, Zhihong
gro.griffith.authorChen, Chengrong
gro.griffith.authorGoloran, Johnvie B.


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