Glyphosate Loss by Runoff and Its Relationship with Phosphorus Fertilization

Authors
Sasal, Maria Carolina; Demonte, Luisina Delma; Cislaghi, Andrea; Gabioud, Emmanuel Adrián; Oszust, José Daniel; Wilson, Marcelo G.; Michlig, Nicolás; Beldomenico, Horacio Ramon; Repetti, María Rosa
Publication Year
2015
Language
English
Format
article
Status
Published version
Description
The aim of this study was to evaluate the relationship between glyphosate and phosphate fertilizer application and their contribution to surface water runoff contamination. The study was performed in Aquic Argiudoll soil (Tezanos Pinto series). Four treatments were assessed on three dates of rainfall simulation after fertilizer and herbicide application. The soluble phosphorus in runoff water was determined by a colorimetric method. For the determination of glyphosate and aminomethylphosphonic acid (AMPA), a method based on fluorenylmethyloxycarbonyl (FMOC) group derivatization, solid phase extraction (SPE) purification, and ultrahigh-performance liquid chromatography?tandem mass spectrometry (UHPLC-MS/MS) was employed. The application of phosphorus fertilizer resulted in an increased loss of glyphosate by runoff after 1 day of application. These results suggest the need for further study to understand the interactions and to determine appropriate application timing with the goal of reducing the pollution risk by runoff.
Fil: Sasal, Maria Carolina. Instituto Nacional de Tecnología Agropecuaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Demonte, Luisina Delma. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Cislaghi, Andrea. Universidad Nacional de Entre Ríos; Argentina
Fil: Gabioud, Emmanuel Adrián. Instituto Nacional de Tecnología Agropecuaria; Argentina
Fil: Oszust, José Daniel. Universidad Nacional de Entre Ríos; Argentina
Fil: Wilson, Marcelo G.. Instituto Nacional de Tecnología Agropecuaria; Argentina. Universidad Nacional de Entre Ríos; Argentina
Fil: Michlig, Nicolás. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Beldomenico, Horacio Ramon. Universidad Nacional del Litoral; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Repetti, María Rosa. Universidad Nacional del Litoral; Argentina
Subject
GLYPHOSATE
PHOSPHORUS FERTILIZATION
SURFACE RUNOFF
PHOSPHORUS-GLYFOSATE INTERACTION
Meteorología y Ciencias Atmosféricas
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/44671