Glyphosate loss by runoff and its relationship with phosphorus fertilization

Authors
Sasal, Maria Carolina; Demonte, Luisina Delma; Cislaghi, Andrea; Gabioud, Emmanuel Adrian; Oszust, José Daniel; Wilson, Marcelo German; Michlig, Nicolas; Beldoménico, Horacio Ramón; 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 (UHPLCMS/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. INTA. Estación Experimental Agropecuaria Paraná; Argentina
Fil: Demonte, Luisina Delma. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Investigación y Análisis de Residuos y Contaminantes Químicos; Argentina
Fil: Cislaghi, Andrea. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fil: Gabioud, Emmanuel Adrian. INTA. Estación Experimental Agropecuaria Paraná; Argentina
Fil: Oszust, José Daniel. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fil: Wilson, Marcelo German. INTA. Estación Experimental Agropecuaria Paraná; Argentina. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias; Argentina
Fil: Michlig, Nicolas. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Investigación y Análisis de Residuos y Contaminantes Químicos; Argentina
Fil: Beldoménico, Horacio Ramón. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Investigación y Análisis de Residuos y Contaminantes Químicos; Argentina
Fil: Repetti, María Rosa. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Programa de Investigación y Análisis de Residuos y Contaminantes Químicos; Argentina
Source
Journal of agricultural and food chemistry 63 (18) : 4444-4448. (2015)
Subject
Glifosato
Escorrentia
Abonos Fosfatados
Phosphate Fertilizers
Runoff
Glyphosate
Fertilización Fosfatada
Access level
Restricted access
License
Repository
INTA Digital (INTA)
Institution
Instituto Nacional de Tecnología Agropecuaria
OAI Identifier
oai:localhost:20.500.12123/2112