Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil
Glyphosate is the most widely used herbicide in Argentina. The strong sorption of glyphosate to the mineral fraction of the soil can be affected by environmental conditions and agricultural management, such as the application of fertilisers. This work aimed to study the effect of pH and the presence of inorganic phosphate on the affinity of glyphosate for nine different surface soils of Argentina. The effect of pH on glyphosate sorption was investigated by batch experiments with pH adjusted between 3 and 12. The greatest glyphosate adsorption occurred at a certain pH value and then adsorption decreased with increasing or decreasing pH. The effects of pH on adsorption could be described by a model that includes changes in electrical potential. The effect of inorganic phosphate on glyphosate adsorption was studied by batch experiments in the presence of 0.5 or 1 mM phosphate. The results showed a significant competition between phosphate and glyphosate in all soils. The Freundlich glyphosate coefficients decreased by 40%–65% with phosphate in solution, and the amount of glyphosate adsorbed decreased between 1% and 5%, depending on the particular characteristics of the soil. For the glyphosate-phosphate competition, the competition terms were not reciprocal with each other because the competition between ions for adsorption sites also involves electrical effects.
Main Authors: | , |
---|---|
Format: | info:ar-repo/semantics/artículo biblioteca |
Language: | eng |
Published: |
Wiley
2022-02
|
Subjects: | Suelo, Potencial Eléctrico, Glifosato, Fosfatos, Coeficiente de Absorción, pH del Suelo, Soil, Eletric Potential, Glyphosate, Phosphates, Absorption Coefficient, Soil pH, |
Online Access: | http://hdl.handle.net/20.500.12123/13453 https://bsssjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ejss.13188 https://doi.org/10.1111/ejss.13188 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:localhost:20.500.12123-13453 |
---|---|
record_format |
koha |
spelling |
oai:localhost:20.500.12123-134532022-11-28T10:24:25Z Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil De Geronimo, Eduardo Aparicio, Virginia Carolina Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH Glyphosate is the most widely used herbicide in Argentina. The strong sorption of glyphosate to the mineral fraction of the soil can be affected by environmental conditions and agricultural management, such as the application of fertilisers. This work aimed to study the effect of pH and the presence of inorganic phosphate on the affinity of glyphosate for nine different surface soils of Argentina. The effect of pH on glyphosate sorption was investigated by batch experiments with pH adjusted between 3 and 12. The greatest glyphosate adsorption occurred at a certain pH value and then adsorption decreased with increasing or decreasing pH. The effects of pH on adsorption could be described by a model that includes changes in electrical potential. The effect of inorganic phosphate on glyphosate adsorption was studied by batch experiments in the presence of 0.5 or 1 mM phosphate. The results showed a significant competition between phosphate and glyphosate in all soils. The Freundlich glyphosate coefficients decreased by 40%–65% with phosphate in solution, and the amount of glyphosate adsorbed decreased between 1% and 5%, depending on the particular characteristics of the soil. For the glyphosate-phosphate competition, the competition terms were not reciprocal with each other because the competition between ions for adsorption sites also involves electrical effects. EEA Balcarce Fil: De Gerónimo, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. 2022-11-28T10:20:22Z 2022-11-28T10:20:22Z 2022-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/13453 https://bsssjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ejss.13188 1365-2389 https://doi.org/10.1111/ejss.13188 eng info:eu-repograntAgreement/INTA/PNSUELO-1134044/AR./Destino ambiental y degradación de los pesticidas agregados al suelo. info:eu-repo/semantics/openAccess application/pdf Wiley European Journal of Soil Science 73 (1) : e13188 (2022) |
institution |
INTA AR |
collection |
DSpace |
country |
Argentina |
countrycode |
AR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-inta-ar |
tag |
biblioteca |
region |
America del Sur |
libraryname |
Biblioteca Central del INTA Argentina |
language |
eng |
topic |
Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH |
spellingShingle |
Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH De Geronimo, Eduardo Aparicio, Virginia Carolina Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
description |
Glyphosate is the most widely used herbicide in Argentina. The strong sorption of glyphosate to the mineral fraction of the soil can be affected by environmental conditions and agricultural management, such as the application of fertilisers. This work aimed to study the effect of pH and the presence of inorganic phosphate on the affinity of glyphosate for nine different surface soils of Argentina. The effect of pH on glyphosate sorption was investigated by batch experiments with pH adjusted between 3 and 12. The greatest glyphosate adsorption occurred at a certain pH value and then adsorption decreased with increasing or decreasing pH. The effects of pH on adsorption could be described by a model that includes changes in electrical potential. The effect of inorganic phosphate on glyphosate adsorption was studied by batch experiments in the presence of 0.5 or 1 mM phosphate. The results showed a significant competition between phosphate and glyphosate in all soils. The Freundlich glyphosate coefficients decreased by 40%–65% with phosphate in solution, and the amount of glyphosate adsorbed decreased between 1% and 5%, depending on the particular characteristics of the soil. For the glyphosate-phosphate competition, the competition terms were not reciprocal with each other because the competition between ions for adsorption sites also involves electrical effects. |
format |
info:ar-repo/semantics/artículo |
topic_facet |
Suelo Potencial Eléctrico Glifosato Fosfatos Coeficiente de Absorción pH del Suelo Soil Eletric Potential Glyphosate Phosphates Absorption Coefficient Soil pH |
author |
De Geronimo, Eduardo Aparicio, Virginia Carolina |
author_facet |
De Geronimo, Eduardo Aparicio, Virginia Carolina |
author_sort |
De Geronimo, Eduardo |
title |
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
title_short |
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
title_full |
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
title_fullStr |
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
title_full_unstemmed |
Changes in soil pH and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
title_sort |
changes in soil ph and addition of inorganic phosphate affect glyphosate adsorption in agricultural soil |
publisher |
Wiley |
publishDate |
2022-02 |
url |
http://hdl.handle.net/20.500.12123/13453 https://bsssjournals.onlinelibrary.wiley.com/doi/abs/10.1111/ejss.13188 https://doi.org/10.1111/ejss.13188 |
work_keys_str_mv |
AT degeronimoeduardo changesinsoilphandadditionofinorganicphosphateaffectglyphosateadsorptioninagriculturalsoil AT apariciovirginiacarolina changesinsoilphandadditionofinorganicphosphateaffectglyphosateadsorptioninagriculturalsoil |
_version_ |
1756008577824194561 |