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resumen

Resumen
Atrazine and ametryn are pre- and post-emergence herbicides widely used in sugarcane fields. Both herbicides are characterized by their moderate to high mobility in soil and are regarded as a threat to hydrologic systems. Physical and chemical soil properties are highlighted as one of the factors governing the fate of pesticides in hydrologic systems. The aim of our study was to estimate the leaching potential of atrazine and ametryn in soils of the [ver mas...]
dc.contributor.authorPortocarrero, Rocio
dc.contributor.authorAparicio, Virginia Carolina
dc.contributor.authorDe Geronimo, Eduardo
dc.contributor.authorCosta, Jose Luis
dc.date.accessioned2019-09-11T16:40:21Z
dc.date.available2019-09-11T16:40:21Z
dc.date.issued2019-08-21
dc.identifier.issn1838-675X
dc.identifier.issn1838-6768
dc.identifier.otherhttps://doi.org/10.1071/SR18342
dc.identifier.urihttp://hdl.handle.net/20.500.12123/5850
dc.identifier.urihttp://www.publish.csiro.au/SR/SR18342
dc.description.abstractAtrazine and ametryn are pre- and post-emergence herbicides widely used in sugarcane fields. Both herbicides are characterized by their moderate to high mobility in soil and are regarded as a threat to hydrologic systems. Physical and chemical soil properties are highlighted as one of the factors governing the fate of pesticides in hydrologic systems. The aim of our study was to estimate the leaching potential of atrazine and ametryn in soils of the saline alluvial plain of Tucumán cultivated with sugarcane crop. Miscible displacement experiments were carried out in triplicate using undisturbed topsoil cores from four farm fields. Field 1 was in plant, fields 2 and 3 were in second ratoon, and field 4 was in third ratoon. Experimental breakthrough curves were fitted to the convection-dispersion equation; results showed that hydraulic transport was in equilibrium conditions, meaning that all the soil water was involved in solute convective transport. Atrazine had asymmetric breakthrough curves, revealing chemical non-equilibrium conditions, with at least two sorption-desorption sites participating in the process. In contrast, ametryn concentrations in leached samples were low and inconsistent; therefore, no breakthrough curves could be described. Total recoveries reached 10% and 2% for leached atrazine and ametryn, respectively, of the total applied. For an estimated annual recharge of 100 mm, these leached amounts would exceed the international reference values for drinking water.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherCSIRO PUBLISHINGes_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceSoil Research Published online: 21 August 2019es_AR
dc.subjectPropiedades del Sueloes_AR
dc.subjectSoil Propertieseng
dc.subjectCaña de Azúcares_AR
dc.subjectSugarcaneeng
dc.subjectAtrazinaes_AR
dc.subjectAtrazineeng
dc.subjectAmetrinaes_AR
dc.subjectAnmetryneng
dc.subjectLixiviaciónes_AR
dc.subjectLeachingeng
dc.titleSoil properties of sugarcane fields controlling triazine leaching potential.es_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Balcarcees_AR
dc.description.filFil: Portocarrero, Rocio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Famaillá; Argentina.es_AR
dc.description.filFil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: De Gerónimo, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.es_AR
dc.description.filFil: Costa, José Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce, Argentina.es_AR
dc.subtypecientifico


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