The effect of flooding and reducing conditions on phosphorus dynamics in Manitoba soils

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dc.contributor.authorEragoda Arachchilage, Geethani Samanthika Amarawansha
dc.contributor.examiningcommitteeZvomuya, Francis (Soil Science) Sri Ranjan, Ramanathan (Biosystem Engineering)en_US
dc.contributor.supervisorKumaragamage, Darshani (Soil Science) Flaten, Don (Soil Science)en_US
dc.date.accessioned2013-11-25T15:56:19Z
dc.date.available2013-11-25T15:56:19Z
dc.date.issued2013-11-25
dc.degree.disciplineSoil Scienceen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractAnaerobic conditions resulting from flooding often lead to enhanced release of phosphorus (P) to overlying water. This study examined the effect of flooding and anaerobic conditions on soil P dynamics. A field ponding study using Scanterbury heavy clay soil (unamended, inorganic fertilizer- or manure-amended), and a laboratory incubation study using 12 soils (unamended or manure-amended) from Manitoba showed that P release to flood water under reduced conditions varied substantially. In the field ponding study, flooding and development of anaerobic conditions did not enhance P release into surface flood or soil pore water. In the incubation study, the response to flooding and anaerobic conditions ranged from a small decrease to a 15-fold increase in dissolved reactive P concentration (DRP) in flood water. Partial least squares analysis indicated that measures of degree of P saturation in soils can effectively predict DRP concentration changes in surface flood water under anaerobic conditions.en_US
dc.description.noteFebruary 2014en_US
dc.identifier.urihttp://hdl.handle.net/1993/22274
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectPhosphorusen_US
dc.subjectFloodingen_US
dc.subjectAnaerobic conditionsen_US
dc.titleThe effect of flooding and reducing conditions on phosphorus dynamics in Manitoba soilsen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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