Persistence and sorption of imazapyr in three Argentinean soils

Autores
Gianelli, Valeria Rosana; Bedmar, Francisco; Costa, Jose Luis
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Imazapyr is a herbicide widely used for weed control in imidazolinone-tolerant sunflower. Imazapyr has a high potential for leaching into groundwater because it is highly water-soluble, persistent in soil, and only weakly sorbed by soils. There is a lack of information available in Argentina concerning groundwater leaching of imazapyr. Therefore, the objective of the present study was to determine the persistence and sorption of imazapyr in 3 Argentinean soils (Tandil, Anguil, and Cerro Azul sites). The presence and concentration of imazapyr were determined and quantified by ultra-performance liquid chromatography and tandem mass spectrometry. The persistence in soils followed the order: Cerro Azul>Tandil>Anguil, with half-life values of 121 d, 75 d, and 37 d, respectively. The half-life of imazapyr was negatively associated with soil pH and iron and aluminum content, and was positively related to clay content. Imazapyr sorption was found to be well described by the Freundlich isotherm. Soil pH and clay, iron, and aluminum contents were the main factors affecting the sorption of imazapyr. The sorption had a limiting effect on the degradation rate. Under certain conditions, the weak sorption and high persistence may increase the movement of imazapyr in the soil profile and the risk of groundwater pollution.
Fil: Gianelli, Valeria Rosana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Bedmar, Francisco. Universidad Nacional de Mar del Plata (UNMdP). Facultad de Ciencias Agrarias; Argentina
Fil: Costa, José Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fuente
Environmental Toxicology and Chemistry 33 (1) : 29-34 (2014)
Materia
Imazapir
Herbicidas
Control Químico de las Malezas
Lixiviación
Sorción del Suelo
Imazapyr
Herbicides
Chemical Weed Control
Leaching
Soil Sorption
Coeficientes de Sorción
Sorption Coefficients
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/27401
Acceder
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oai_identifier_str oai:localhost:20.500.12123/27401
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network_name_str INTA Digital (INTA)
spelling Persistence and sorption of imazapyr in three Argentinean soilsGianelli, Valeria RosanaBedmar, FranciscoCosta, Jose LuisImazapirHerbicidasControl Químico de las MalezasLixiviaciónSorción del SueloImazapyrHerbicidesChemical Weed ControlLeachingSoil SorptionCoeficientes de SorciónSorption CoefficientsImazapyr is a herbicide widely used for weed control in imidazolinone-tolerant sunflower. Imazapyr has a high potential for leaching into groundwater because it is highly water-soluble, persistent in soil, and only weakly sorbed by soils. There is a lack of information available in Argentina concerning groundwater leaching of imazapyr. Therefore, the objective of the present study was to determine the persistence and sorption of imazapyr in 3 Argentinean soils (Tandil, Anguil, and Cerro Azul sites). The presence and concentration of imazapyr were determined and quantified by ultra-performance liquid chromatography and tandem mass spectrometry. The persistence in soils followed the order: Cerro Azul>Tandil>Anguil, with half-life values of 121 d, 75 d, and 37 d, respectively. The half-life of imazapyr was negatively associated with soil pH and iron and aluminum content, and was positively related to clay content. Imazapyr sorption was found to be well described by the Freundlich isotherm. Soil pH and clay, iron, and aluminum contents were the main factors affecting the sorption of imazapyr. The sorption had a limiting effect on the degradation rate. Under certain conditions, the weak sorption and high persistence may increase the movement of imazapyr in the soil profile and the risk of groundwater pollution.Fil: Gianelli, Valeria Rosana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Bedmar, Francisco. Universidad Nacional de Mar del Plata (UNMdP). Facultad de Ciencias Agrarias; ArgentinaFil: Costa, José Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaOxford University Press2026-08-12T15:05:29Z2026-08-12T15:05:29Z2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/27401https://academic.oup.com/etc/article-abstract/33/1/29/7761094?redirectedFrom=fulltext1944-79221060-3271https://doi.org/10.1002/etc.2400Environmental Toxicology and Chemistry 33 (1) : 29-34 (2014)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2026-09-24T11:43:41Zoai:localhost:20.500.12123/27401instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2026-09-24 11:43:42.739INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Persistence and sorption of imazapyr in three Argentinean soils
title Persistence and sorption of imazapyr in three Argentinean soils
spellingShingle Persistence and sorption of imazapyr in three Argentinean soils
Gianelli, Valeria Rosana
Imazapir
Herbicidas
Control Químico de las Malezas
Lixiviación
Sorción del Suelo
Imazapyr
Herbicides
Chemical Weed Control
Leaching
Soil Sorption
Coeficientes de Sorción
Sorption Coefficients
title_short Persistence and sorption of imazapyr in three Argentinean soils
title_full Persistence and sorption of imazapyr in three Argentinean soils
title_fullStr Persistence and sorption of imazapyr in three Argentinean soils
title_full_unstemmed Persistence and sorption of imazapyr in three Argentinean soils
title_sort Persistence and sorption of imazapyr in three Argentinean soils
dc.creator.none.fl_str_mv Gianelli, Valeria Rosana
Bedmar, Francisco
Costa, Jose Luis
author Gianelli, Valeria Rosana
author_facet Gianelli, Valeria Rosana
Bedmar, Francisco
Costa, Jose Luis
author_role author
author2 Bedmar, Francisco
Costa, Jose Luis
author2_role author
author
dc.subject.none.fl_str_mv Imazapir
Herbicidas
Control Químico de las Malezas
Lixiviación
Sorción del Suelo
Imazapyr
Herbicides
Chemical Weed Control
Leaching
Soil Sorption
Coeficientes de Sorción
Sorption Coefficients
topic Imazapir
Herbicidas
Control Químico de las Malezas
Lixiviación
Sorción del Suelo
Imazapyr
Herbicides
Chemical Weed Control
Leaching
Soil Sorption
Coeficientes de Sorción
Sorption Coefficients
dc.description.none.fl_txt_mv Imazapyr is a herbicide widely used for weed control in imidazolinone-tolerant sunflower. Imazapyr has a high potential for leaching into groundwater because it is highly water-soluble, persistent in soil, and only weakly sorbed by soils. There is a lack of information available in Argentina concerning groundwater leaching of imazapyr. Therefore, the objective of the present study was to determine the persistence and sorption of imazapyr in 3 Argentinean soils (Tandil, Anguil, and Cerro Azul sites). The presence and concentration of imazapyr were determined and quantified by ultra-performance liquid chromatography and tandem mass spectrometry. The persistence in soils followed the order: Cerro Azul>Tandil>Anguil, with half-life values of 121 d, 75 d, and 37 d, respectively. The half-life of imazapyr was negatively associated with soil pH and iron and aluminum content, and was positively related to clay content. Imazapyr sorption was found to be well described by the Freundlich isotherm. Soil pH and clay, iron, and aluminum contents were the main factors affecting the sorption of imazapyr. The sorption had a limiting effect on the degradation rate. Under certain conditions, the weak sorption and high persistence may increase the movement of imazapyr in the soil profile and the risk of groundwater pollution.
Fil: Gianelli, Valeria Rosana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
Fil: Bedmar, Francisco. Universidad Nacional de Mar del Plata (UNMdP). Facultad de Ciencias Agrarias; Argentina
Fil: Costa, José Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina
description Imazapyr is a herbicide widely used for weed control in imidazolinone-tolerant sunflower. Imazapyr has a high potential for leaching into groundwater because it is highly water-soluble, persistent in soil, and only weakly sorbed by soils. There is a lack of information available in Argentina concerning groundwater leaching of imazapyr. Therefore, the objective of the present study was to determine the persistence and sorption of imazapyr in 3 Argentinean soils (Tandil, Anguil, and Cerro Azul sites). The presence and concentration of imazapyr were determined and quantified by ultra-performance liquid chromatography and tandem mass spectrometry. The persistence in soils followed the order: Cerro Azul>Tandil>Anguil, with half-life values of 121 d, 75 d, and 37 d, respectively. The half-life of imazapyr was negatively associated with soil pH and iron and aluminum content, and was positively related to clay content. Imazapyr sorption was found to be well described by the Freundlich isotherm. Soil pH and clay, iron, and aluminum contents were the main factors affecting the sorption of imazapyr. The sorption had a limiting effect on the degradation rate. Under certain conditions, the weak sorption and high persistence may increase the movement of imazapyr in the soil profile and the risk of groundwater pollution.
publishDate 2014
dc.date.none.fl_str_mv 2014
2026-08-12T15:05:29Z
2026-08-12T15:05:29Z
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/20.500.12123/27401
https://academic.oup.com/etc/article-abstract/33/1/29/7761094?redirectedFrom=fulltext
1944-7922
1060-3271
https://doi.org/10.1002/etc.2400
url http://hdl.handle.net/20.500.12123/27401
https://academic.oup.com/etc/article-abstract/33/1/29/7761094?redirectedFrom=fulltext
https://doi.org/10.1002/etc.2400
identifier_str_mv 1944-7922
1060-3271
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv Environmental Toxicology and Chemistry 33 (1) : 29-34 (2014)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.733355

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