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Información tecnológica

On-line version ISSN 0718-0764


SASAL, María C; ANDRIULO, Adrián E; WILSON, Marcelo G  and  PORTELA, Silvina I. Glyphosate losses by drainage and runoff from Mollisois under no-till agriculture. Inf. tecnol. [online]. 2010, vol.21, n.5, pp.135-142. ISSN 0718-0764.

Glyphosate losses by drainage and runoff from no-till-soybean-cultivated Molisolls representative of the Argentinean Rolling Pampas and its translocation in transgenic soybean biomass have been determined. Three lisymeters (Typic Argiudoll) and 3 runoff plots (Aquic Argiudoll) located in the Experimental Stations of the National Institute of Farming Technology of Pergamino y Paraná, respectively, were used. Glyphosate applied before sowing was detected in drainage water and the post-emergence application was detected in grains with small and variable concentrations. Peaks of glyphosate concentrations in drainage and runoff water were registered after important rain events (-10 ug L"1). However, the amount of glyphosate lost throughout the study period was lower than 0.03 and 0.6% of the amounts applied, respectively. High variability of Glyphosate concentrations was found in all compartments analyzed.

Keywords : glyphosate; drainage; runoff; transgenic soybean; Mollisols.

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