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dc.contributor.author
de Gerónimo, Eduardo
dc.contributor.author
Aparicio, Virginia Carolina
dc.date.available
2022-11-01T12:12:41Z
dc.date.issued
2021-10
dc.identifier.citation
de Gerónimo, Eduardo; Aparicio, Virginia Carolina; Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil; Wiley Blackwell Publishing, Inc; European Journal Of Soil Science; 73; 1; 10-2021; 1-16
dc.identifier.issn
1351-0754
dc.identifier.uri
http://hdl.handle.net/11336/175769
dc.description.abstract
Glyphosate is the most widely used herbicide in Argentina. The strong sorption of glyphosate to the mineral fraction of the soil can be affected by environmental conditions and agricultural management, such as the application of fertilisers. This work aimed to study the effect of pH and the presence of inorganic phosphate on the affinity of glyphosate for nine different surface soils of Argentina. The effect of pH on glyphosate sorption was investigated by batch experiments with pH adjusted between 3 and 12. The greatest glyphosate adsorption occurred at a certain pH value and then adsorption decreased with increasing or decreasing pH. The effects of pH on adsorption could be described by a model that includes changes in electrical potential. The effect of inorganic phosphate on glyphosate adsorption was studied by batch experiments in the presence of 0.5 or 1 mM phosphate. The results showed a significant competition between phosphate and glyphosate in all soils. The Freundlich glyphosate coefficients decreased by 40%–65% with phosphate in solution, and the amount of glyphosate adsorbed decreased between 1% and 5%, depending on the particular characteristics of the soil. For the glyphosate-phosphate competition, the competition terms were not reciprocal with each other because the competition between ions for adsorption sites also involves electrical effects. Highlights: There is a pH at which glyphosate shows a higher affinity for the soil. The presence of phosphate significantly reduces the adsorption of glyphosate to the soil. The effects of pH can be explained by rather small changes in the estimated surface potential.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ELECTRIC POTENTIAL
dc.subject
GLYPHOSATE
dc.subject
PHOSPHATE
dc.subject
SOIL VARIABILITY
dc.subject
SORPTION COEFFICIENT
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Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-10-25T14:16:17Z
dc.identifier.eissn
1365-2389
dc.journal.volume
73
dc.journal.number
1
dc.journal.pagination
1-16
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: de Gerónimo, Eduardo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. - Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible.; Argentina
dc.description.fil
Fil: Aparicio, Virginia Carolina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Mar del Plata. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible. - Instituto Nacional de Tecnologia Agropecuaria. Centro Regional Buenos Aires Sur. Estacion Experimental Agropecuaria Balcarce. Instituto de Innovación Para la Producción Agropecuaria y El Desarrollo Sostenible.; Argentina
dc.journal.title
European Journal Of Soil Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/ejss.13188
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bsssjournals.onlinelibrary.wiley.com/doi/10.1111/ejss.13188
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