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Impact of sandy soil amendment with dairy slurry treated through pH adjustment on nutrient and coliform leaching

2023Journal article Open access
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dc.contributor.authorRodrigues, Joana
dc.contributor.authorFragoso, Rita
dc.contributor.authorBrito, Luisa
dc.contributor.authorFangueiro, David
dc.date.accessioned2024-01-15T13:22:15Z
dc.date.available2024-01-15T13:22:15Z
dc.date.issued2023
dc.description.abstractLivestock farming produces high volumes of animal slurry that can be sanitized using low-cost treatments by pH adjustment, reducing pathogen contamination, and promoting slurry valorization as a safe fertilizer. This work aims to evaluate the impact of sandy soil amendment with dairy slurry treated by pH adjustment on the potential release of nutrients and coliforms into groundwater. A laboratory soil column leaching experiment was conducted and the surface application of six treatments was tested: raw dairy slurry, dairy slurry acidified with H2SO4 , dairy slurry alkalinized with KOH, alkalinized/neutralized dairy slurry, mineral fertilizer, and a control. The fertilizer application rate was 0.08 g N kg−1 dry soil. Leachates were analyzed for pH, electrical conductivity, N-NH4 + and N-NO3 −, macro- and micronutrients, and fecal coliforms. Results showed that amendment with dairy slurry led to significantly lower nitrate leaching potential than mineral fertilizer (maximum 16.1 vs. 50.4%). The use of hygienized slurry by alkalinization decreased the potential leaching of coliforms relative to raw slurry. However, incomplete sanitization by acidification strongly promoted coliform leaching and the risk of groundwater contamination. It can be concluded that the use of alkalinized dairy slurry is a safer solution than raw slurry with regard to the risk of groundwater pollution.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRodrigues, J.; Fragoso, R.; Brito, L.; Fangueiro, D. Impact of sandy soil amendment with dairy slurry treated through pH adjustment on nutrient and coliform leaching. Agronomy 2023, 13, 1176.pt_PT
dc.identifier.doi10.3390/agronomy13041176pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/29824
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationAnimal slurry hygienization for use in industrial horticulture.
dc.relationLinking Landscape, Environment, Agriculture and Food
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectdairy slurrypt_PT
dc.subjectpH adjustmentpt_PT
dc.subjectleaching potentialpt_PT
dc.subjectnitratespt_PT
dc.subjectcoliformspt_PT
dc.subjectsanitizationpt_PT
dc.titleImpact of sandy soil amendment with dairy slurry treated through pH adjustment on nutrient and coliform leachingpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAnimal slurry hygienization for use in industrial horticulture.
oaire.awardTitleLinking Landscape, Environment, Agriculture and Food
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FASP-SOL%2F28769%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04129%2F2020/PT
oaire.citation.issue4pt_PT
oaire.citation.startPage1176pt_PT
oaire.citation.titleAgronomypt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameAmaral Fragoso
person.familyNameBrito
person.familyNameFangueiro
person.givenNameRita
person.givenNameLuisa
person.givenNameDavid
person.identifier.ciencia-id3515-DA5A-45A4
person.identifier.ciencia-id2E19-52D0-0BB5
person.identifier.ciencia-id2C1E-55EC-D6C9
person.identifier.orcid0000-0003-2957-7340
person.identifier.orcid0000-0002-8614-5184
person.identifier.orcid0000-0002-6101-9210
person.identifier.scopus-author-id17134928600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication1ee56641-85c3-4128-b016-984c18c3ebaa
relation.isAuthorOfPublication54fe02c8-ee2a-487e-8c5c-00893cab58c8
relation.isAuthorOfPublicationb48e1880-8682-4508-8aae-dc68814c9177
relation.isAuthorOfPublication.latestForDiscovery1ee56641-85c3-4128-b016-984c18c3ebaa
relation.isProjectOfPublication30a39678-81c0-4d86-b9b6-1df7b8da1dc0
relation.isProjectOfPublication68ef0aed-47b8-469e-819f-7175024862e9
relation.isProjectOfPublication.latestForDiscovery68ef0aed-47b8-469e-819f-7175024862e9

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