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dc.contributor.authorToor, G.en
dc.contributor.authorCondron, Leo M.en
dc.contributor.authorDi, Hong J.en
dc.contributor.authorCameron, Keith C.en
dc.date.accessioned2008-04-09T22:13:08Z
dc.date.issued2004en
dc.identifier.citationToor, G. S., Condron, L. M., Di, H. J., & Cameron, K. C. (2004). Seasonal fluctuations in phosphorus loss by leaching from a grassland soil. Soil Science Society of America Journal, 68(4), 1429-1436.en
dc.identifier.issn0361-5995en
dc.identifier.urihttps://hdl.handle.net/10182/431
dc.description.abstractPhosphorus losses from soils have been reported to impair the water quality, resulting in deaths of fish and other marine animals, and can harm human health. The objective of this study was to determine the seasonal distribution of P forms and losses in leachate collected from intact soil monoliths (70-cm depth, 50-cm diam.) of a Lismore stony silt loam soil (fine-loamy, mixed, superactive, frigid Aquic Cumulic Hapludoll) during a 2-yr period. The experiment included different combinations of mineral P fertilizer at 45 or 90 kg P ha⁻¹ yr⁻¹ and/or farm dairy effluent (FDE) at 200 or 400 kg N ha⁻¹ yr⁻¹, which contained 41 to 95 kg P ha⁻¹ yr⁻¹. Amounts and forms of P in leachate collected during the irrigation (IR; November–April) and nonirrigation (NIR; May–October) seasons were compared. Results showed that P losses were higher in particulate forms (mainly particulate unreactive phosphorus, PUP) during the IR seasons. This may be because of regular inputs of high intensity flood IR (92 mm per application), which increased the dislocation of particles in the soil profile, thereby resulting in higher PUP losses. On the other hand, the amount of natural rainfall was much lower (usually <20 mm per event) during the NIR seasons that resulted in less dislocation of particles compared with the IR seasons; hence, lower P losses as PUP but higher losses as dissolved unreactive phosphorus (DUP). Variation in P losses during the different seasons suggest the need to develop mitigation strategies that should focus on reducing DUP losses during the NIR and PUP losses during the IR season.en
dc.format.extent1429-1436en
dc.language.isoenen
dc.publisherSoil Science Society of Americaen
dc.relationThe original publication is available from - Soil Science Society of America - http://soil.scijournals.org/cgi/content/full/68/4/1429en
dc.rightsCopyright © 2004 Soil Science Society of Americaen
dc.subjectphosphorusen
dc.subjectgrassland soilsen
dc.subjectleachingen
dc.subjectAgronomy & Agricultureen
dc.titleSeasonal fluctuations in phosphorus loss by leaching from a grassland soilen
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciencesen
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
lu.contributor.unitResearch Management Officeen
lu.contributor.unit/LU/Research Management Office/2018 PBRF Staff groupen
dc.subject.anzsrc05 Environmental Sciencesen
dc.subject.anzsrc06 Biological Sciencesen
dc.subject.anzsrc07 Agricultural And Veterinary Sciencesen
dc.relation.isPartOfSoil Science of America Journalen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/2018 PBRF Staff group
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://soil.scijournals.org/cgi/content/full/68/4/1429en
pubs.volume68en
lu.identifier.orcid0000-0002-3082-994X
lu.identifier.orcid0000-0002-7631-1636


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