INVESTIGADORES
CARRIQUIRIBORDE Pedro
artículos
Título:
Environmental fate of glyphosate and aminomethylphosphonic acid in surface waters and soil of agricultural basins
Autor/es:
APARICIO, V.; DE GERÓNIMO, E.; MARINO, D.J.; PRIMOST, J.; CARRIQUIRIBORDE, P.; COSTA, J.L.
Revista:
CHEMOSPHERE
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 93 p. 1866 - 1873
ISSN:
0045-6535
Resumen:
Argentinian agricultural production is fundamentally based on a technological package that combines notill
and glyphosate in the cultivation of transgenic crops. Transgenic crops (soybean, maize and cotton)
occupy 23 million hectares. This means that glyphosate is the most employed herbicide in the country,
where 180?200 million liters are applied every year.
The aim of this work is to study the environmental fate of glyphosate and its major degradation product,
aminomethylphosphonic acid (AMPA), in surface water and soil of agricultural basins. Sixteen agricultural
sites and forty-four streams in the agricultural basins were sampled three times during 2012. The
samples were analyzed by UPLC-MS/MS ESI(+/).
In cultivated soils, glyphosate was detected in concentrations between 35 and 1502 lg kg1, while
AMPA concentration ranged from 299 to 2256 lg kg1. In the surface water studied, the presence of glyphosate
and AMPA was detected in about 15% and 12% of the samples analyzed, respectively. In suspended
particulate matter, glyphosate was found in 67% while AMPA was present in 20% of the
samples. In streams sediment glyphosate and AMPA were also detected in 66% and 88.5% of the samples
respectively.
This study is, to our knowledge, the first dealing with glyphosate fate in agricultural soils in Argentina.
In the present study, it was demonstrated that glyphosate and AMPA are present in soils under agricultural
activity. It was also found that in stream samples the presence of glyphosate and AMPA is relatively
more frequent in suspended particulate matter and sediment than in water.