Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño

Autores
Luzzi, Johana Ines; Aparicio, Virginia Carolina; Ledda, Alejandra Rosa; Acosta, José Luis; Sauer, Veronica; de Gerónimo, Eduardo
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Due to the continuous use of agrochemicals in agriculture, appreciable quantities of herbicides and their degradation products can accumulate in the ecosystem, as a consequence of the reduction of the purification capacity ofthe soil. Although specific data for atrazine are not available, it is estimated that the use of the compound in thecountry is about 10-15 million kg or L.Once in the environment, degradation of atrazine (ATZ) in soils occurs both by chemical and biological processes, leading to the formation of metabolites, such as hydroxytrazine (OH-ATR), desethylatrazine (DEA) anddesisopropylatrazine (DIA). The objective of this work was to evaluate the degradation of ATZ over time, intwo contrasting agricultural rotations belonging to a long-term trial (T1- Soy monoculture, with application inpre-sowing and T2- Corn / Sunflower-Sorghum / Soybean , with applications in pre-sowing and post-emergence ofATZ) established on a Haplustol oxic soil of sub-tropical climate, located in INTA Las Breñas (Chaco, Argentina).Soil samples were collected during the soybean and corn cycle at different time intervals: 2, 4, 6, 8, 10, 12, 14, 16,30, 45, 60 days after each application of the herbicide. In each plot samples were taken at 0-5; 5-10; 10-20; 20-30cm deep.The analytical quantifications were performed by high pressure liquid chromatography coupled to tandem massspectrometry (UHPLC / MS MS).The results have shown:- The ATZ distribution followed a trend similar to the stratification of organic matter with depth, with the highestconcentration in the first 0-5 cm of soil in both treatments.- After 7 days from the application, the amount of ATZ for T1 and T2 was 24% and 11% of the initial concentration, respectively.- After 30 days, the presence of ATZ for T1 was 4.5% while for T2 and with a dose three times higher than insoybean, it was 9.69% of the initial dose.- After 10 days of the second application of ATZ in T1, 94% of this dose had been degraded, an effect of amicrobial community adapted to increase the rate of degradation after successive applications.- During the first days of application, an increase in the concentration of DEA, DIA and OH-ATZ was observed- OH-ATZ could be quantified in the four soil depths, unlike DEA and DIA found only in the first 10 cm,suggesting the presence of a more active microbial population on the surface due to the presence of greater carbonresources, nitrogen and phosphorus generated in direct seeding- In both OH-ATZ treatments, I represent the highest% relative concentration of metabolites, demonstrating aquantitative dynamics similar to ATZ over time.The dissipation of ATZ was favored by the content of differential organic matter, the high temperatures characteristic of the place and the fluctuating humidity in soil.
Fil: Luzzi, Johana Ines. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Ledda, Alejandra Rosa. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Acosta, José Luis. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Sauer, Veronica. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina
Fil: de Gerónimo, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina
EGU General Assembly 2019
viena
Austria
European Geosciences Union
Materia
SOIL
DEGRADATION
HERBICIDE
FARMING
Nivel de accesibilidad
acceso abierto
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:11336/283508
Acceder
id CONICETDig_9f144647e0bb5cb1532f8c668fff5181
oai_identifier_str oai:ri.conicet.gov.ar:11336/283508
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueñoLuzzi, Johana InesAparicio, Virginia CarolinaLedda, Alejandra RosaAcosta, José LuisSauer, Veronicade Gerónimo, EduardoSOILDEGRADATIONHERBICIDEFARMINGhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Due to the continuous use of agrochemicals in agriculture, appreciable quantities of herbicides and their degradation products can accumulate in the ecosystem, as a consequence of the reduction of the purification capacity ofthe soil. Although specific data for atrazine are not available, it is estimated that the use of the compound in thecountry is about 10-15 million kg or L.Once in the environment, degradation of atrazine (ATZ) in soils occurs both by chemical and biological processes, leading to the formation of metabolites, such as hydroxytrazine (OH-ATR), desethylatrazine (DEA) anddesisopropylatrazine (DIA). The objective of this work was to evaluate the degradation of ATZ over time, intwo contrasting agricultural rotations belonging to a long-term trial (T1- Soy monoculture, with application inpre-sowing and T2- Corn / Sunflower-Sorghum / Soybean , with applications in pre-sowing and post-emergence ofATZ) established on a Haplustol oxic soil of sub-tropical climate, located in INTA Las Breñas (Chaco, Argentina).Soil samples were collected during the soybean and corn cycle at different time intervals: 2, 4, 6, 8, 10, 12, 14, 16,30, 45, 60 days after each application of the herbicide. In each plot samples were taken at 0-5; 5-10; 10-20; 20-30cm deep.The analytical quantifications were performed by high pressure liquid chromatography coupled to tandem massspectrometry (UHPLC / MS MS).The results have shown:- The ATZ distribution followed a trend similar to the stratification of organic matter with depth, with the highestconcentration in the first 0-5 cm of soil in both treatments.- After 7 days from the application, the amount of ATZ for T1 and T2 was 24% and 11% of the initial concentration, respectively.- After 30 days, the presence of ATZ for T1 was 4.5% while for T2 and with a dose three times higher than insoybean, it was 9.69% of the initial dose.- After 10 days of the second application of ATZ in T1, 94% of this dose had been degraded, an effect of amicrobial community adapted to increase the rate of degradation after successive applications.- During the first days of application, an increase in the concentration of DEA, DIA and OH-ATZ was observed- OH-ATZ could be quantified in the four soil depths, unlike DEA and DIA found only in the first 10 cm,suggesting the presence of a more active microbial population on the surface due to the presence of greater carbonresources, nitrogen and phosphorus generated in direct seeding- In both OH-ATZ treatments, I represent the highest% relative concentration of metabolites, demonstrating aquantitative dynamics similar to ATZ over time.The dissipation of ATZ was favored by the content of differential organic matter, the high temperatures characteristic of the place and the fluctuating humidity in soil.Fil: Luzzi, Johana Ines. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; ArgentinaFil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; ArgentinaFil: Ledda, Alejandra Rosa. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; ArgentinaFil: Acosta, José Luis. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; ArgentinaFil: Sauer, Veronica. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; ArgentinaFil: de Gerónimo, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; ArgentinaEGU General Assembly 2019vienaAustriaEuropean Geosciences UnionCopernicus Publications2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/283508Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño; EGU General Assembly 2019; viena; Austria; 2019; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU2019/EGU2019-2578.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:30:07Zoai:ri.conicet.gov.ar:11336/283508instacron: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:34982026-08-25 14:30:07.599CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
title Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
spellingShingle Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
Luzzi, Johana Ines
SOIL
DEGRADATION
HERBICIDE
FARMING
title_short Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
title_full Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
title_fullStr Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
title_full_unstemmed Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
title_sort Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño
dc.creator.none.fl_str_mv Luzzi, Johana Ines
Aparicio, Virginia Carolina
Ledda, Alejandra Rosa
Acosta, José Luis
Sauer, Veronica
de Gerónimo, Eduardo
author Luzzi, Johana Ines
author_facet Luzzi, Johana Ines
Aparicio, Virginia Carolina
Ledda, Alejandra Rosa
Acosta, José Luis
Sauer, Veronica
de Gerónimo, Eduardo
author_role author
author2 Aparicio, Virginia Carolina
Ledda, Alejandra Rosa
Acosta, José Luis
Sauer, Veronica
de Gerónimo, Eduardo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv SOIL
DEGRADATION
HERBICIDE
FARMING
topic SOIL
DEGRADATION
HERBICIDE
FARMING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Due to the continuous use of agrochemicals in agriculture, appreciable quantities of herbicides and their degradation products can accumulate in the ecosystem, as a consequence of the reduction of the purification capacity ofthe soil. Although specific data for atrazine are not available, it is estimated that the use of the compound in thecountry is about 10-15 million kg or L.Once in the environment, degradation of atrazine (ATZ) in soils occurs both by chemical and biological processes, leading to the formation of metabolites, such as hydroxytrazine (OH-ATR), desethylatrazine (DEA) anddesisopropylatrazine (DIA). The objective of this work was to evaluate the degradation of ATZ over time, intwo contrasting agricultural rotations belonging to a long-term trial (T1- Soy monoculture, with application inpre-sowing and T2- Corn / Sunflower-Sorghum / Soybean , with applications in pre-sowing and post-emergence ofATZ) established on a Haplustol oxic soil of sub-tropical climate, located in INTA Las Breñas (Chaco, Argentina).Soil samples were collected during the soybean and corn cycle at different time intervals: 2, 4, 6, 8, 10, 12, 14, 16,30, 45, 60 days after each application of the herbicide. In each plot samples were taken at 0-5; 5-10; 10-20; 20-30cm deep.The analytical quantifications were performed by high pressure liquid chromatography coupled to tandem massspectrometry (UHPLC / MS MS).The results have shown:- The ATZ distribution followed a trend similar to the stratification of organic matter with depth, with the highestconcentration in the first 0-5 cm of soil in both treatments.- After 7 days from the application, the amount of ATZ for T1 and T2 was 24% and 11% of the initial concentration, respectively.- After 30 days, the presence of ATZ for T1 was 4.5% while for T2 and with a dose three times higher than insoybean, it was 9.69% of the initial dose.- After 10 days of the second application of ATZ in T1, 94% of this dose had been degraded, an effect of amicrobial community adapted to increase the rate of degradation after successive applications.- During the first days of application, an increase in the concentration of DEA, DIA and OH-ATZ was observed- OH-ATZ could be quantified in the four soil depths, unlike DEA and DIA found only in the first 10 cm,suggesting the presence of a more active microbial population on the surface due to the presence of greater carbonresources, nitrogen and phosphorus generated in direct seeding- In both OH-ATZ treatments, I represent the highest% relative concentration of metabolites, demonstrating aquantitative dynamics similar to ATZ over time.The dissipation of ATZ was favored by the content of differential organic matter, the high temperatures characteristic of the place and the fluctuating humidity in soil.
Fil: Luzzi, Johana Ines. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Ledda, Alejandra Rosa. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Acosta, José Luis. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina
Fil: Sauer, Veronica. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina
Fil: de Gerónimo, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Chaco-Formosa. Estación Experimental Agropecuaria Las Breñas; Argentina
EGU General Assembly 2019
viena
Austria
European Geosciences Union
description Due to the continuous use of agrochemicals in agriculture, appreciable quantities of herbicides and their degradation products can accumulate in the ecosystem, as a consequence of the reduction of the purification capacity ofthe soil. Although specific data for atrazine are not available, it is estimated that the use of the compound in thecountry is about 10-15 million kg or L.Once in the environment, degradation of atrazine (ATZ) in soils occurs both by chemical and biological processes, leading to the formation of metabolites, such as hydroxytrazine (OH-ATR), desethylatrazine (DEA) anddesisopropylatrazine (DIA). The objective of this work was to evaluate the degradation of ATZ over time, intwo contrasting agricultural rotations belonging to a long-term trial (T1- Soy monoculture, with application inpre-sowing and T2- Corn / Sunflower-Sorghum / Soybean , with applications in pre-sowing and post-emergence ofATZ) established on a Haplustol oxic soil of sub-tropical climate, located in INTA Las Breñas (Chaco, Argentina).Soil samples were collected during the soybean and corn cycle at different time intervals: 2, 4, 6, 8, 10, 12, 14, 16,30, 45, 60 days after each application of the herbicide. In each plot samples were taken at 0-5; 5-10; 10-20; 20-30cm deep.The analytical quantifications were performed by high pressure liquid chromatography coupled to tandem massspectrometry (UHPLC / MS MS).The results have shown:- The ATZ distribution followed a trend similar to the stratification of organic matter with depth, with the highestconcentration in the first 0-5 cm of soil in both treatments.- After 7 days from the application, the amount of ATZ for T1 and T2 was 24% and 11% of the initial concentration, respectively.- After 30 days, the presence of ATZ for T1 was 4.5% while for T2 and with a dose three times higher than insoybean, it was 9.69% of the initial dose.- After 10 days of the second application of ATZ in T1, 94% of this dose had been degraded, an effect of amicrobial community adapted to increase the rate of degradation after successive applications.- During the first days of application, an increase in the concentration of DEA, DIA and OH-ATZ was observed- OH-ATZ could be quantified in the four soil depths, unlike DEA and DIA found only in the first 10 cm,suggesting the presence of a more active microbial population on the surface due to the presence of greater carbonresources, nitrogen and phosphorus generated in direct seeding- In both OH-ATZ treatments, I represent the highest% relative concentration of metabolites, demonstrating aquantitative dynamics similar to ATZ over time.The dissipation of ATZ was favored by the content of differential organic matter, the high temperatures characteristic of the place and the fluctuating humidity in soil.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/283508
Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño; EGU General Assembly 2019; viena; Austria; 2019; 1-1
CONICET Digital
CONICET
url http://hdl.handle.net/11336/283508
identifier_str_mv Atrazine degradation dynamics in two contrasting agricultural rotations in Mollisols of southwestern chaqueño; EGU General Assembly 2019; viena; Austria; 2019; 1-1
CONICET Digital
CONICET
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language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://meetingorganizer.copernicus.org/EGU2019/EGU2019-2578.pdf
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dc.publisher.none.fl_str_mv Copernicus Publications
publisher.none.fl_str_mv Copernicus Publications
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