Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina

Autores
Gómez Ortiz, Ana Maria; Okada, Elena; Bedmar, Francisco; Costa, Jose Luis
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In Argentina, glyphosate use has increased exponentially in the past years due to the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in three Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf). Glyphosate sorption was high and the Kf varied from 115.6 to 1612 mg 1-1/nL1/n /Kg. Cerro Azul soil had the highest glyphosate sorption capacity due to a combination of factors such as higher clay content, CEC, total Fe, Al oxides and lower available phosphorous and pH. Desorption isotherms were also modeled using the Freundlich equation. In general, desorption was very low (<12%). The low values of hysteresis coefficient (H) confirm that glyphosate strongly sorbs to the soils and that it is almost an irreversible process. Anguil soil had a significant higher desorption coefficient (Kfd) than the other soils, associated with its lower clay content and higher pH and phosphorous. Glyphosate high sorption and low desorption to the studied soils may prevent groundwater contamination. However, it may also affect its bioavailability increasing its persistence and favoring its accumulation in environment. Results of this study contribute to the knowledge and characterization of glyphosate retention in different soils.
Fil: Gómez Ortiz, Ana Maria. Universidad Nacional de Mar del Plata; Argentina
Fil: Okada, Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Bedmar, Francisco. Universidad Nacional de Mar del Plata; Argentina
Fil: Costa, Jose Luis. Instituto Nacional de Tecnología Agropecuaria; Argentina
Materia
SORPTION
DESORPTION
GLYPHOSATE
SOIL PROPERTIES
Nivel de accesibilidad
acceso embargado
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31055
Acceder
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spelling Sorption and desorption of glyphosate in Mollisols and Ultisols soils of ArgentinaGómez Ortiz, Ana MariaOkada, ElenaBedmar, FranciscoCosta, Jose LuisSORPTIONDESORPTIONGLYPHOSATESOIL PROPERTIEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In Argentina, glyphosate use has increased exponentially in the past years due to the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in three Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf). Glyphosate sorption was high and the Kf varied from 115.6 to 1612 mg 1-1/nL1/n /Kg. Cerro Azul soil had the highest glyphosate sorption capacity due to a combination of factors such as higher clay content, CEC, total Fe, Al oxides and lower available phosphorous and pH. Desorption isotherms were also modeled using the Freundlich equation. In general, desorption was very low (<12%). The low values of hysteresis coefficient (H) confirm that glyphosate strongly sorbs to the soils and that it is almost an irreversible process. Anguil soil had a significant higher desorption coefficient (Kfd) than the other soils, associated with its lower clay content and higher pH and phosphorous. Glyphosate high sorption and low desorption to the studied soils may prevent groundwater contamination. However, it may also affect its bioavailability increasing its persistence and favoring its accumulation in environment. Results of this study contribute to the knowledge and characterization of glyphosate retention in different soils.Fil: Gómez Ortiz, Ana Maria. Universidad Nacional de Mar del Plata; ArgentinaFil: Okada, Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Bedmar, Francisco. Universidad Nacional de Mar del Plata; ArgentinaFil: Costa, Jose Luis. Instituto Nacional de Tecnología Agropecuaria; ArgentinaSociety of Environmental Toxicology and Chemistry2017-05info:eu-repo/date/embargoEnd/2018-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31055Costa, Jose Luis; Bedmar, Francisco; Okada, Elena; Gómez Ortiz, Ana Maria; Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 36; 10; 5-2017; 2587-25920730-7268CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://doi.wiley.com/10.1002/etc.3851info:eu-repo/semantics/altIdentifier/doi/10.1002/etc.3851info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:46:23Zoai:ri.conicet.gov.ar:11336/31055instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:46:24.13CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
title Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
spellingShingle Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
Gómez Ortiz, Ana Maria
SORPTION
DESORPTION
GLYPHOSATE
SOIL PROPERTIES
title_short Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
title_full Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
title_fullStr Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
title_full_unstemmed Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
title_sort Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina
dc.creator.none.fl_str_mv Gómez Ortiz, Ana Maria
Okada, Elena
Bedmar, Francisco
Costa, Jose Luis
author Gómez Ortiz, Ana Maria
author_facet Gómez Ortiz, Ana Maria
Okada, Elena
Bedmar, Francisco
Costa, Jose Luis
author_role author
author2 Okada, Elena
Bedmar, Francisco
Costa, Jose Luis
author2_role author
author
author
dc.subject.none.fl_str_mv SORPTION
DESORPTION
GLYPHOSATE
SOIL PROPERTIES
topic SORPTION
DESORPTION
GLYPHOSATE
SOIL PROPERTIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In Argentina, glyphosate use has increased exponentially in the past years due to the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in three Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf). Glyphosate sorption was high and the Kf varied from 115.6 to 1612 mg 1-1/nL1/n /Kg. Cerro Azul soil had the highest glyphosate sorption capacity due to a combination of factors such as higher clay content, CEC, total Fe, Al oxides and lower available phosphorous and pH. Desorption isotherms were also modeled using the Freundlich equation. In general, desorption was very low (<12%). The low values of hysteresis coefficient (H) confirm that glyphosate strongly sorbs to the soils and that it is almost an irreversible process. Anguil soil had a significant higher desorption coefficient (Kfd) than the other soils, associated with its lower clay content and higher pH and phosphorous. Glyphosate high sorption and low desorption to the studied soils may prevent groundwater contamination. However, it may also affect its bioavailability increasing its persistence and favoring its accumulation in environment. Results of this study contribute to the knowledge and characterization of glyphosate retention in different soils.
Fil: Gómez Ortiz, Ana Maria. Universidad Nacional de Mar del Plata; Argentina
Fil: Okada, Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Bedmar, Francisco. Universidad Nacional de Mar del Plata; Argentina
Fil: Costa, Jose Luis. Instituto Nacional de Tecnología Agropecuaria; Argentina
description In Argentina, glyphosate use has increased exponentially in the past years due to the widespread adoption of no-till management combined with genetically modified glyphosate-resistant crops. This massive use of glyphosate has created concern about its potential environmental impact. Sorption-desorption of glyphosate was studied in three Argentinean soils with contrasting characteristics. Glyphosate sorption isotherms were modeled using the Freundlich equation to estimate the sorption coefficient (Kf). Glyphosate sorption was high and the Kf varied from 115.6 to 1612 mg 1-1/nL1/n /Kg. Cerro Azul soil had the highest glyphosate sorption capacity due to a combination of factors such as higher clay content, CEC, total Fe, Al oxides and lower available phosphorous and pH. Desorption isotherms were also modeled using the Freundlich equation. In general, desorption was very low (<12%). The low values of hysteresis coefficient (H) confirm that glyphosate strongly sorbs to the soils and that it is almost an irreversible process. Anguil soil had a significant higher desorption coefficient (Kfd) than the other soils, associated with its lower clay content and higher pH and phosphorous. Glyphosate high sorption and low desorption to the studied soils may prevent groundwater contamination. However, it may also affect its bioavailability increasing its persistence and favoring its accumulation in environment. Results of this study contribute to the knowledge and characterization of glyphosate retention in different soils.
publishDate 2017
dc.date.none.fl_str_mv 2017-05
info:eu-repo/date/embargoEnd/2018-05-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31055
Costa, Jose Luis; Bedmar, Francisco; Okada, Elena; Gómez Ortiz, Ana Maria; Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 36; 10; 5-2017; 2587-2592
0730-7268
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31055
identifier_str_mv Costa, Jose Luis; Bedmar, Francisco; Okada, Elena; Gómez Ortiz, Ana Maria; Sorption and desorption of glyphosate in Mollisols and Ultisols soils of Argentina; Society of Environmental Toxicology and Chemistry; Environmental Toxicology and Chemistry; 36; 10; 5-2017; 2587-2592
0730-7268
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://doi.wiley.com/10.1002/etc.3851
info:eu-repo/semantics/altIdentifier/doi/10.1002/etc.3851
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Society of Environmental Toxicology and Chemistry
publisher.none.fl_str_mv Society of Environmental Toxicology and Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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