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dc.contributor.authorBrennan, Raymond B.
dc.contributor.authorHealy, Mark G.
dc.date.accessioned2014-08-28T09:31:59Z
dc.date.available2014-08-28T09:31:59Z
dc.date.issued2014-08-22
dc.identifier.citationBrennan, R.B., Wall, D., Fenton, O., Grant, J., Sharpley, A.N., Healy, M.G. (2014) 'The impact of chemical amendment of dairy cattle slurry before land application on soil phosphorus dynamics'. Communications In Soil Science And Plant Analysis, 45 (16):2215-2233.en_US
dc.identifier.issn0010-3624
dc.identifier.urihttp://hdl.handle.net/10379/4515
dc.descriptionJournal articleen_US
dc.description.abstractApplication of dairy cattle slurry to agricultural soils, particularly those with high phosphorus (P) status or vulnerability to runoff, can increase P loss to waterbodies, which may accelerate eutrophication. While the effectiveness of P stabilizing amendments added to slurry or soil for reducing incidental P losses is well established, their effectiveness in reducing chronic (long-term) P losses is not as well known. Five soils (4 mineral and 1 organic) were selected to represent the range of chemical and physical properties typically found in agricultural soils in Ireland, and a 9-mo incubation study was conducted to investigate the effectiveness of amending dairy cattle slurry with either alum, lime, poly-aluminum chloride (PAC), or ferric chloride (FeCl3), in reducing water extractable P (WEP) levels in the soils. Alum, lime, and PAC were the most effective amendments in decreasing WEP (compared to a slurry-control) for the four mineral soils (up to 97% 1 mo after application and by an average of 47% at the end the 9-mo incubation period). In comparison, FeCl3 increased WEP (compared to the slurry-control) by an average of 35% at the end the study. None of the amendments examined effectively reduced WEP of the organic soil. No amendment reduced soil test P (Morgan s P (Pm) and Mehlich-3 P (M3P)) compared to the soil-only treatment. Therefore, amendment of dairy cattle slurry with alum, lime, and PAC can reduce the risk of chronic P loss in mineral soils without decreasing plant available P. Alum maintained the highest levels of M3P across the 4 mineral soils with the least risk of P loss to overlying water. With the exception of the soil-only treatment, there were significant positive relationships (p<0.05) between M3P and WEP for each treatment. Further work across a wider range of soil types and drainage regimes is required before recommendations can be made to farmers or catchment managers.en_US
dc.description.sponsorshipTeagasc [Walsh Fellowship]en_US
dc.formatapplication/pdfen_US
dc.language.isoenen_US
dc.publisherTaylor and Francisen_US
dc.relation.ispartofCommunications In Soil Science And Plant Analysisen
dc.subjectAlumen_US
dc.subjectLimeen_US
dc.subjectManagementen_US
dc.subjectWastewateren_US
dc.titleThe impact of chemical amendment of dairy cattle slurry before land application on soil phosphorus dynamicsen_US
dc.typeArticleen_US
dc.date.updated2014-08-26T13:40:16Z
dc.identifier.doi10.1080/00103624.2014.912293
dc.local.publishedsourcehttp://dx.doi.org/10.1080/00103624.2014.912293en_US
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|Other|~|
dc.internal.rssid6995394
dc.local.contactMark Healy, Dept. Of Civil Engineering, Room E210, Civil Engineering Building, Nui Galway. 5364 Email: mark.healy@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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