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handle: 10261/132242 , 11441/32416
[ES]: Se ha comprobado la eficacia de formulaciones desarrolladas mediante complejos surfactante-sepiolita en la reducción de la lixiviación del herbicida mesotriona. Entre las formulaciones desarrolladas se ha escogido aquella que presentaba un perfil de liberación más lento en ensayos in vitro. Al aplicarse en columnas de suelo se observó una lixiviación del herbicida y acumulación con la formulación comercial en los segmentos inferiores a diferencia de la formulación desarrollada, que se correlacionaba con un incremento de la bioeficacia en los segmentos superiores. En experimentos en parcelas de campo, a diferencia de la formulación comercial, no se observó un rebrote de las malas hierbas al usar la formulación desarrollada. [EN]: Synthesis and efficiency of slow release formulations of the herbicide mesotrione. The bioefficay of developed formulations based on surfactant-sepiolite complexes for reduced leaching of the herbicide mesotrione was tested. The formulation with a slower release pattern in in-vitro experiments was chosen for soil column and field experiments. In soil columns, the commercial formulation was leached and accumulated in the lower segments unlike the synthesized formulation, with a higher amount retained in the upper segments which was also correlated with a higher bioefficacy. In field experiments, a regrowth of weeds with the clay-based formulation was not observed, unlike the commercial formulation.
Esta investigación ha recibido financiación a través de los proyectos CMT2009-07425 (MEC) cofinanciado por el Fondo Europeo de Desarrollo Regional (FEDER) y el Proyecto Bilateral Hispano-Argentino PRI-PIBAR-2011-1393 (MINECO-MINCYT). Carmen Galán agradece la beca Predoctoral disfrutada y asociada al Proyecto de Excelencia P09- RNM-4581.
Ponencia presentada en el XV Congreso de la Sociedad Española de Malherbología SEMh 2015 “La Malherbología y la Transferencia Tecnológica” Sevilla, 19 al 22 de octubre de 2015
Peer Reviewed
Formulación de liberación controlada, Lixiviación, Sepiolite, Lixiviation, Bioactividad, Sepiolita, Plaguicidas, Pesticides, Bioactivity, Slow release formulation
Formulación de liberación controlada, Lixiviación, Sepiolite, Lixiviation, Bioactividad, Sepiolita, Plaguicidas, Pesticides, Bioactivity, Slow release formulation
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