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Part of book or chapter of book . 2003 . Peer-reviewed
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Cambios en la adsorción/biodisponibilidad de dos fungicidas con el tiempo de residencia en el suelo

Authors: Cox, Lucía; Velarde Muñoz, Pilar; Fernandes, M. C.; Hermosín, M.C.; Cornejo, J.;

Cambios en la adsorción/biodisponibilidad de dos fungicidas con el tiempo de residencia en el suelo

Abstract

[ES]: Se han determinado los cambios en la distribución fase adsorbida/fase en solución del suelo de los fungicidas metalaxyl y triciclazol con el tiempo de residencia en el suelo. Tres suelos de diferentes características físico-químicas se trataron con los fungicidas y se incubaron 30 días a 20 0C y humedad del 40 % de la capacidad máxima de retención de agua del suelo. Los coeficientes de distribución Kd para triciclazol fueron mayores que para metalaxil en los tres suelos, y para ambos fungicidas fueron mayores en los suelos con alto contenido en materia orgánica y/o arcilla. Con el tiempo de residencia en el suelo, los coeficientes Kd de metalaxyl tan sólo aumentaron en el caso del suelo de mayor contenido en materia orgánica, mientras que en el caso de triciclazol los valores de Kd aumentaron en el caso del suelo de mayor contenido en materia orgánica y en el suelo de mayor contenido en arcilla y bajo contenido en materia orgánica.

[EN]: The present study was conducted to determine the changes in distribution between sorbed and solution phases of the fungicides metalaxyl and tricyclazole with incubation time. Three different soils were selected for this study, treated with the fungicides, and incubated for 30 days at 20 ºC and soil moisture content equivalent to 40 % of soil water holding capacity. Distribution coefficients Kd for tricyclazole were higher than for metalaxyl in the three soils considered, and as in the case of metalaxyl increased with organic matter and/or clay content of the soil. With aging, Kd for metalaxyl only increased in the case of the soil of higher organic matter content, whereas in the case of tricyclazole Kd values increased with incubation time in the soil of highest organic matter content and in a soil with very high clay content and low organic matter content.

Este trabajo ha sido financiado con el proyecto AGL 2001-1554 del Ministerio de Ciencia y Tecnologia y RNM 124 de la Junta de Andalucía. M.C. Fernandes agradece a la Fundación de Ciencia y Tecnología de Portugal por su beca predoctoral BFRH/BD/721/2000 del Programa POCTI.

4 páginas, 2 figuras, 3 tablas, 18 referencias. El libro de resúmenes consta de 414 páginas.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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