Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems
The objective of this work was to study the sorption and transport of imazapyr (IMZ) in two soils with different physical–chemical properties, subject to long-term conventional tillage (CT) and no-tillage (NT) systems. Sorption was carried out using batch equilibrium method and high performance liqu...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/2108 https://doi.org/10.1016/j.geoderma.2015.03.016 |
| _version_ | 1855034905301352448 |
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| author | Porfiri, Carolina Montoya, Jorgelina Ceferina Koskinen, William C. Azcarate, Mariela Pamela |
| author_browse | Azcarate, Mariela Pamela Koskinen, William C. Montoya, Jorgelina Ceferina Porfiri, Carolina |
| author_facet | Porfiri, Carolina Montoya, Jorgelina Ceferina Koskinen, William C. Azcarate, Mariela Pamela |
| author_sort | Porfiri, Carolina |
| collection | INTA Digital |
| description | The objective of this work was to study the sorption and transport of imazapyr (IMZ) in two soils with different physical–chemical properties, subject to long-term conventional tillage (CT) and no-tillage (NT) systems. Sorption was carried out using batch equilibrium method and high performance liquid chromatography analytical routines. Displacement experiments through intact soil cores were done using IMZ as reactive solute and bromide (Br) as non-reactive solute. Equilibrium (CDEeq) and non-equilibrium (CDEnon-eq) transport models (CXTFIT 2.1) were employed to describe the breakthrough curves (BTCs). IMZ was only sorbed by NT soils with Kd values ranging from 0.22 to 1.1 L kg−1 . Clay content, pH and CEC values were the main factors affecting
the sorption of IMZ. Miscible displacement studies showed that almost all the soil water was mobile and transport was related to physical equilibrium conditions. Some evidence of sorption non-equilibrium was seen in column experiments with IMZ; retardation factors were close to one, demonstrating the low sorption and the high potential to leach of this compound. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2108 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA21082018-07-05T18:49:53Z Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems Porfiri, Carolina Montoya, Jorgelina Ceferina Koskinen, William C. Azcarate, Mariela Pamela Sorción Imazapir Lixiviación Propiedades Físico-Químicas Suelo Labranza Convencional Conventional Tillage Soil Chemicophysical Properties Soil Properties Leaching Imazapyr Sorption The objective of this work was to study the sorption and transport of imazapyr (IMZ) in two soils with different physical–chemical properties, subject to long-term conventional tillage (CT) and no-tillage (NT) systems. Sorption was carried out using batch equilibrium method and high performance liquid chromatography analytical routines. Displacement experiments through intact soil cores were done using IMZ as reactive solute and bromide (Br) as non-reactive solute. Equilibrium (CDEeq) and non-equilibrium (CDEnon-eq) transport models (CXTFIT 2.1) were employed to describe the breakthrough curves (BTCs). IMZ was only sorbed by NT soils with Kd values ranging from 0.22 to 1.1 L kg−1 . Clay content, pH and CEC values were the main factors affecting the sorption of IMZ. Miscible displacement studies showed that almost all the soil water was mobile and transport was related to physical equilibrium conditions. Some evidence of sorption non-equilibrium was seen in column experiments with IMZ; retardation factors were close to one, demonstrating the low sorption and the high potential to leach of this compound. Fil: Porfiri, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina Fil: Montoya, Jorgelina Ceferina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina Fil: Koskinen, William C. Department of Agriculture. Agricultural Research Service. Soil and Water Management Research Unit; Estados Unidos Fil: Azcarate, Mariela Pamela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina 2018-03-23T15:44:02Z 2018-03-23T15:44:02Z 2015 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/2108 https://doi.org/10.1016/j.geoderma.2015.03.016 0016-7061 eng info:eu-repograntAgreement/INTA/PNNAT/1128041/AR.Anguil, La Pampa/Gestion de sistemas agropecuarios y agroindustriales para reducir la contaminación. info:eu-repograntAgreement/INTA/PNNAT/1128043/AR./Los agroquímicos como fuente de contaminación difusa en agroecosistemas. info:eu-repo/semantics/restrictedAccess application/pdf Geoderma 251–252 : 1-9. (August 2015) |
| spellingShingle | Sorción Imazapir Lixiviación Propiedades Físico-Químicas Suelo Labranza Convencional Conventional Tillage Soil Chemicophysical Properties Soil Properties Leaching Imazapyr Sorption Porfiri, Carolina Montoya, Jorgelina Ceferina Koskinen, William C. Azcarate, Mariela Pamela Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title | Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title_full | Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title_fullStr | Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title_full_unstemmed | Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title_short | Adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| title_sort | adsorption and transport of imazapyr through intact soil columns taken from two soils under two tillage systems |
| topic | Sorción Imazapir Lixiviación Propiedades Físico-Químicas Suelo Labranza Convencional Conventional Tillage Soil Chemicophysical Properties Soil Properties Leaching Imazapyr Sorption |
| url | http://hdl.handle.net/20.500.12123/2108 https://doi.org/10.1016/j.geoderma.2015.03.016 |
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