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La yerba no es basura : lombricultura y producción de Vermicompost a partir de residuos de yerba mate en Uruguay

Authors: TORRENDELL, MARIA; PELERINO, FLAVIO; USETA, GONZALO;

La yerba no es basura : lombricultura y producción de Vermicompost a partir de residuos de yerba mate en Uruguay

Abstract

En Uruguay el consumo anual de yerba mate genera unas 125 toneladas de residuos orgánicos. La lombricultura es una delas formas de obtener materia orgánica a partir del reciclado de residuos domiciliarios orgánicos. Los desechos de yerbamate tienen un gran potencial de reciclado si son utilizados como sustrato en la lombricultura. Utilizando distintos sustratos,tiempos de compostaje y volúmenes de yerba, se determinaron algunas de las condiciones necesarias para la utilización de dichos residuos como sustrato para la lombriz Eisenia fetida. Se estudiaron las condiciones de pH que el desecho debería alcanzar para ser tolerado y mejor aprovechado por las lombrices, y el período de tiempo que la yerba demora en alcanzar estas condiciones. Se observó que el período de tiempo mínimo de precompostado para el mejor aprovechamiento de la yerba por parte de las lombrices es de cuatro semanas. Se analizaron también las características del vermicompost obtenido, en cuanto a parámetros de materia orgánica, nitrógeno, fósforo y metales. El valor de nitrógeno (1 %) y de materia orgánica, que ronda el 30 %, son similares a los encontrados en otros humus que se obtienen por métodos semejantes. Sin embargo, para el Fósforo los valores resultaron por debajo de lo encontrado en los análisis realizados por el CUI (Laboratorio Ambiental Echotech, octubre 2006).AbstractThe annual consumption of “yerba mate” (mate herb infusion) in Uruguay generates about 125 metric tons of organic waste. Vermicomposting is one way to obtain organic matter by recycling organic household waste. The waste of “yerba mate” has a great potential for recycling if it is used as a substrate in vermicomposting. Using different substrates, composting times andvolumes of “yerba mate” we determined some of the necessary conditions for the use of yerba mate waste as a substrate for the Eisenia fetida earthworm. We studied the optimal pH conditions that the waste should have in order to be tolerated and best exploited by the worms and the period of time that the “yerba mate” takes to achieve these conditions. We observed that four weeks is the minimum amount of precomposting time of “yerba mate”, recquired by the worms for an improved processing of it. The vermicompost obtained was analyzed. The following analysis were performed: organic matter, Nitrogen, Phosphorous and metals. The values found for Nitrogen (1 %) and organic matter (which was around 30 %) are parallel to the values found for other composts which are obtained by similar composting methods. However, the value of Phosphorus was found to be lower than that found in the analysis performed by CUI (Ambiental Laboratory Echotech, October 2006).

Keywords

Science (General), Science, LOMBRICULTURA, Q, YERBA MATE, MEDIO AMBIENTE, MICROBIOLOGÍA, Q1-390, URUGUAY, RECICLADO DE RESIDUOS

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selected citations
These citations are derived from selected sources.
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).
BIP!Citations provided by BIP!
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.
BIP!Impulse provided by BIP!
1
Average
Average
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