Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model

Autores
Morras, Héctor José María; Behrends Kraemer, Filipe; Sainz, Daiana Soledad; Fernández, Patricia; Chagas, Celio Ignacio
Año de publicación
2022
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Glyphosate and AMPA were measured in a no-tilled (NT) soil and in the runoff resulting from the rain simulation carried out after 270 days of the application of the herbicide. Glyphosate concentration was in low values in runoff water but was not detected in the soil. In contrast, AMPA was found only in soil samples (same LOD/LOQ for both molecules). These intriguing results, on the one hand have led us to develop a conceptual model explaining the dynamics of glyphosate in NT soils with strongly developed platy structures resulting from this soil management, and, on the other hand, to underline the requirement of certain methodological precautions when analyzing properties of such stratified surface horizons. In our model, glyphosate was mostly degraded into AMPA although a small part remained adsorbed and trapped in the plates in the upper soil layer. In the field test, platy aggregates were destroyed by the raindrop impacts, glyphosate was washed off and transported in solution or bound to eroded soil particles. Glyphosate was not detected in soil analysis mainly due to the reduced volume of the surface plates in the total sample and, to a lesser extent, some loss of surface soil material during samples preparation due to its high content of roots and plant debris. In contrast, AMPA leached preferentially and became trapped in the micropores of the dense layer. Therefore, its absence in the runoff and its relatively high proportion in the soil would be due to its accumulation and preservation in the lower portion of the A horizon. The long persistence of AMPA would be explained not only by its physical occlusion in small pores preventing microbial accessibility, but also by a low diffusivity of oxygen and water restricting biotic and abiotic degra dation processes. It is suggested that an integrative approach considering both the physical behaviour and the architecture of the soil at different scales in the laboratory and in the field, can contribute to understanding the fate of glyphosate and other agrochemicals in NT soils.
Fil: Morrás, Héctor José María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.
Fil: Behrends Kraemer, Filipe. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Sainz, Daiana Soledad. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.
Fil: Fernández, Patricia. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Chagas, Celio. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.
Fuente
Soil & Tillage Research 223 : 105471 (September 2022)
Materia
Zero Tillage
Glyphosate
Soil Structure
Models
Cero-labranza
Glifosato
Estructura del Suelo
Modelos
Platy Structure
Estructura Laminar
Región Pampeana
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/12600

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spelling Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual modelMorras, Héctor José MaríaBehrends Kraemer, FilipeSainz, Daiana SoledadFernández, PatriciaChagas, Celio IgnacioZero TillageGlyphosateSoil StructureModelsCero-labranzaGlifosatoEstructura del SueloModelosPlaty StructureEstructura LaminarRegión PampeanaGlyphosate and AMPA were measured in a no-tilled (NT) soil and in the runoff resulting from the rain simulation carried out after 270 days of the application of the herbicide. Glyphosate concentration was in low values in runoff water but was not detected in the soil. In contrast, AMPA was found only in soil samples (same LOD/LOQ for both molecules). These intriguing results, on the one hand have led us to develop a conceptual model explaining the dynamics of glyphosate in NT soils with strongly developed platy structures resulting from this soil management, and, on the other hand, to underline the requirement of certain methodological precautions when analyzing properties of such stratified surface horizons. In our model, glyphosate was mostly degraded into AMPA although a small part remained adsorbed and trapped in the plates in the upper soil layer. In the field test, platy aggregates were destroyed by the raindrop impacts, glyphosate was washed off and transported in solution or bound to eroded soil particles. Glyphosate was not detected in soil analysis mainly due to the reduced volume of the surface plates in the total sample and, to a lesser extent, some loss of surface soil material during samples preparation due to its high content of roots and plant debris. In contrast, AMPA leached preferentially and became trapped in the micropores of the dense layer. Therefore, its absence in the runoff and its relatively high proportion in the soil would be due to its accumulation and preservation in the lower portion of the A horizon. The long persistence of AMPA would be explained not only by its physical occlusion in small pores preventing microbial accessibility, but also by a low diffusivity of oxygen and water restricting biotic and abiotic degra dation processes. It is suggested that an integrative approach considering both the physical behaviour and the architecture of the soil at different scales in the laboratory and in the field, can contribute to understanding the fate of glyphosate and other agrochemicals in NT soils.Fil: Morrás, Héctor José María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.Fil: Behrends Kraemer, Filipe. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Sainz, Daiana Soledad. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.Fil: Fernández, Patricia. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Chagas, Celio. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.Elsevier2022-08-16T17:22:12Z2022-08-16T17:22:12Z2022-07-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/12600https://www.sciencedirect.com/science/article/pii/S016719872200157X0167-1987https://doi.org/10.1016/j.still.2022.105471Soil & Tillage Research 223 : 105471 (September 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaspainfo:eu-repo/semantics/restrictedAccess2025-09-04T09:49:31Zoai:localhost:20.500.12123/12600instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:49:32.032INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
title Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
spellingShingle Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
Morras, Héctor José María
Zero Tillage
Glyphosate
Soil Structure
Models
Cero-labranza
Glifosato
Estructura del Suelo
Modelos
Platy Structure
Estructura Laminar
Región Pampeana
title_short Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
title_full Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
title_fullStr Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
title_full_unstemmed Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
title_sort Soil structure and glyphosate fate under no-till manangement in the pampa region. II. Glyphosate and AMPA persistence and spatial distribution in the long-term. A conceptual model
dc.creator.none.fl_str_mv Morras, Héctor José María
Behrends Kraemer, Filipe
Sainz, Daiana Soledad
Fernández, Patricia
Chagas, Celio Ignacio
author Morras, Héctor José María
author_facet Morras, Héctor José María
Behrends Kraemer, Filipe
Sainz, Daiana Soledad
Fernández, Patricia
Chagas, Celio Ignacio
author_role author
author2 Behrends Kraemer, Filipe
Sainz, Daiana Soledad
Fernández, Patricia
Chagas, Celio Ignacio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Zero Tillage
Glyphosate
Soil Structure
Models
Cero-labranza
Glifosato
Estructura del Suelo
Modelos
Platy Structure
Estructura Laminar
Región Pampeana
topic Zero Tillage
Glyphosate
Soil Structure
Models
Cero-labranza
Glifosato
Estructura del Suelo
Modelos
Platy Structure
Estructura Laminar
Región Pampeana
dc.description.none.fl_txt_mv Glyphosate and AMPA were measured in a no-tilled (NT) soil and in the runoff resulting from the rain simulation carried out after 270 days of the application of the herbicide. Glyphosate concentration was in low values in runoff water but was not detected in the soil. In contrast, AMPA was found only in soil samples (same LOD/LOQ for both molecules). These intriguing results, on the one hand have led us to develop a conceptual model explaining the dynamics of glyphosate in NT soils with strongly developed platy structures resulting from this soil management, and, on the other hand, to underline the requirement of certain methodological precautions when analyzing properties of such stratified surface horizons. In our model, glyphosate was mostly degraded into AMPA although a small part remained adsorbed and trapped in the plates in the upper soil layer. In the field test, platy aggregates were destroyed by the raindrop impacts, glyphosate was washed off and transported in solution or bound to eroded soil particles. Glyphosate was not detected in soil analysis mainly due to the reduced volume of the surface plates in the total sample and, to a lesser extent, some loss of surface soil material during samples preparation due to its high content of roots and plant debris. In contrast, AMPA leached preferentially and became trapped in the micropores of the dense layer. Therefore, its absence in the runoff and its relatively high proportion in the soil would be due to its accumulation and preservation in the lower portion of the A horizon. The long persistence of AMPA would be explained not only by its physical occlusion in small pores preventing microbial accessibility, but also by a low diffusivity of oxygen and water restricting biotic and abiotic degra dation processes. It is suggested that an integrative approach considering both the physical behaviour and the architecture of the soil at different scales in the laboratory and in the field, can contribute to understanding the fate of glyphosate and other agrochemicals in NT soils.
Fil: Morrás, Héctor José María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.
Fil: Behrends Kraemer, Filipe. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Sainz, Daiana Soledad. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina.
Fil: Fernández, Patricia. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Chagas, Celio. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.
description Glyphosate and AMPA were measured in a no-tilled (NT) soil and in the runoff resulting from the rain simulation carried out after 270 days of the application of the herbicide. Glyphosate concentration was in low values in runoff water but was not detected in the soil. In contrast, AMPA was found only in soil samples (same LOD/LOQ for both molecules). These intriguing results, on the one hand have led us to develop a conceptual model explaining the dynamics of glyphosate in NT soils with strongly developed platy structures resulting from this soil management, and, on the other hand, to underline the requirement of certain methodological precautions when analyzing properties of such stratified surface horizons. In our model, glyphosate was mostly degraded into AMPA although a small part remained adsorbed and trapped in the plates in the upper soil layer. In the field test, platy aggregates were destroyed by the raindrop impacts, glyphosate was washed off and transported in solution or bound to eroded soil particles. Glyphosate was not detected in soil analysis mainly due to the reduced volume of the surface plates in the total sample and, to a lesser extent, some loss of surface soil material during samples preparation due to its high content of roots and plant debris. In contrast, AMPA leached preferentially and became trapped in the micropores of the dense layer. Therefore, its absence in the runoff and its relatively high proportion in the soil would be due to its accumulation and preservation in the lower portion of the A horizon. The long persistence of AMPA would be explained not only by its physical occlusion in small pores preventing microbial accessibility, but also by a low diffusivity of oxygen and water restricting biotic and abiotic degra dation processes. It is suggested that an integrative approach considering both the physical behaviour and the architecture of the soil at different scales in the laboratory and in the field, can contribute to understanding the fate of glyphosate and other agrochemicals in NT soils.
publishDate 2022
dc.date.none.fl_str_mv 2022-08-16T17:22:12Z
2022-08-16T17:22:12Z
2022-07-14
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/20.500.12123/12600
https://www.sciencedirect.com/science/article/pii/S016719872200157X
0167-1987
https://doi.org/10.1016/j.still.2022.105471
url http://hdl.handle.net/20.500.12123/12600
https://www.sciencedirect.com/science/article/pii/S016719872200157X
https://doi.org/10.1016/j.still.2022.105471
identifier_str_mv 0167-1987
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Soil & Tillage Research 223 : 105471 (September 2022)
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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