The Effects of the Co-Application of MCPA Herbicide and Urea on Grass Rhizosphere Microcosms

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datacite.alternateIdentifier.citationAgronomy, 14 (7), 2024
datacite.alternateIdentifier.doi10.3390/agronomy14071366
datacite.alternateIdentifier.issn2073-4395
datacite.creatorCampos, Marco A.
datacite.creatorPalma, Graciela
datacite.creatorFaúndez Urbina, C. A.
datacite.creatorElgueta, Sebastián A.
datacite.date2024
datacite.rightsAcceso abierto
datacite.subjectHerbicide
datacite.subjectMcpa
datacite.subjectRhizosphere
datacite.subjectUrea
datacite.titleThe Effects of the Co-Application of MCPA Herbicide and Urea on Grass Rhizosphere Microcosms
dc.date.accessioned2025-10-06T14:21:38Z
dc.date.available2025-10-06T14:21:38Z
dc.description.abstractBackground: Urea fertilizer and MCPA herbicide are widely used agrochemicals in pastures. Even though urea hydrolysis impacts soil pH, potentially affecting MCPA dissipation, little is known about the effects of their co-application into the rhizosphere. Hence, we aimed to analyze the dynamics of urea transformation and MCPA dissipation when both are co-applied to the soil. Methods: A greenhouse experiment was conducted with a planted control and treatments incorporating urea and/or MCPA. Subsequently, pH changes, urea transformation into N-NH<inf>4</inf>+ and N-NO<inf>3</inf>?, the enzymatic activity of urease and dehydrogenase, and MCPA dissipation were monitored for 30 d. Results: Urea application induced a significant (p < 0.05) pH change, production of N-NH<inf>4</inf>+ (from 50 and 250 mg kg?1) and N-NO<inf>3</inf>? (from 206 to 347 mg kg?1), and urease (from 12 to 35 µmol N-NH<inf>4</inf>+g?1 h?1) and dehydrogenase (from 0.5 to 2.5 mg TPF g?1 h?1) activities. Urea also decelerated MCPA dissipation in the latter half of the experiment, whereas MCPA reduced urease activity when urea and herbicide were co-applied. Conclusions: Urea was the primary factor modifying the properties of the rhizosphere by stimulating the activity of microbial enzymes, shaping the pH changes during its mineralization, and decelerating MCPA dissipation. MCPA did not reduce urea mineralization but slowed urease activity, constituting an insight that requires further study. © 2024 Elsevier B.V., All rights reserved.
dc.description.ia_keywordurea, mcpa, dissipation, activity, urease, herbicide, application
dc.formatPDF
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/6710
dc.language.isoen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.sourceAgronomy
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nCiencias del Medio Ambiente
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2024
oaire.citationIssue7
oaire.citationTitleAgronomy
oaire.citationVolume14
oaire.fundingReferenceANID FONDECYT 1230872, 11280838 (Regular)
oaire.fundingReferenceUCT RUKAKO UCT21102
oaire.fundingReferenceFEQUIP-RB-01
oaire.fundingReferenceUFRO Beca Postdoctoral
oaire.fundingReferenceUSS Fondo USS-FIN-24-APCS-15
oaire.licenseConditionObra bajo licencia Creative Commons Atribución 4.0 Internacional
oaire.licenseCondition.urihttps://creativecommons.org/licenses/by/4.0/
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
uct.catalogadorjvu
uct.comunidadCiencias de la Saluden_US
uct.departamentoDepartamento de Procesos Diagnósticos y Evaluación
uct.facultadFacultad de Ciencias de la Salud
uct.indizacionSocial Sciences Citation Index - SSCI
uct.indizacionScopus
uct.indizacionLatindex
uct.indizacionDialnet
uct.indizacionScIELO
uct.indizacionDOAJ
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