Caracterización de la turba subtropical del departamento Islas del Ibicuy (Entre Ríos, Argentina)
; Morisigue, D. E. Otros responsables
Fecha
07/2011
Editorial
Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias
Revista
AgriScientia
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1668-298X
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Español
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En la región del bajo Delta del Paraná (Argentina) se presentan condiciones anaeróbicas y en consecuencia, una acumulación de restos vegetales poco descompuestos que conforman la turba subtropical. Ésta es usada en el área metropolitana bonaerense como componente de sustratos para plantas, pero generalmente sus propiedades físicas y químicas son variables. Para hallar los factores que causan esta variación, el objetivo de este estudio fue caracterizar la turba subtropical del departamento Islas del Ibicuy. Se analizaron física y químicamente 27 muestras adquiridas en su lugar de origen y 51 muestras comerciales obtenidas en tres empresas. En la turba obtenida en su lugar de origen se observó desde la superficie a la base un aumento de la densidad, capacidad de retención de agua y CE, y una disminución de la materia orgánica, porosidad de aireación y pH. En las muestras comerciales se observaron mayores coeficientes de variación en los macro nutrientes. La turba subtropical extraída manualmente fue menos densa y con mayor contenido de materia orgánica que la extraída mecánicamente. La turba es variable a lo largo de su perfil, y su forma de extracción influye en sus propiedades.
In the low Paraná Delta region (Argentina), anaerobic conditions promote the accumulation of vegetable wastes with almost no decomposition which form the subtropical peat. This is used in the Buenos Aires metropolitan area as a substrate component for plant production, but generally its physical and chemical properties are variable. The objective of this study was to characterize the subtropical peat from Islas Ibicuy Department in order to find the causes for this variation. Twenty-seven samples obtained in its original or natural place and fifty-one commercial samples obtained from three firms were physically and chemically analyzed. In the peat obtained from its place of origin an increasing density, water holding capacity and EC, and a decrease in organic matter, aeration porosity and pH, was observed, from the surface to the base. In the commercial samples, greater variation coefficients in the macronutrient content were observed. Subtropical peat extracted manually was less dense and had more organic matter content than the one extracted mechanically. The peat is variable along the profile and the extraction system influences their properties.
In the low Paraná Delta region (Argentina), anaerobic conditions promote the accumulation of vegetable wastes with almost no decomposition which form the subtropical peat. This is used in the Buenos Aires metropolitan area as a substrate component for plant production, but generally its physical and chemical properties are variable. The objective of this study was to characterize the subtropical peat from Islas Ibicuy Department in order to find the causes for this variation. Twenty-seven samples obtained in its original or natural place and fifty-one commercial samples obtained from three firms were physically and chemically analyzed. In the peat obtained from its place of origin an increasing density, water holding capacity and EC, and a decrease in organic matter, aeration porosity and pH, was observed, from the surface to the base. In the commercial samples, greater variation coefficients in the macronutrient content were observed. Subtropical peat extracted manually was less dense and had more organic matter content than the one extracted mechanically. The peat is variable along the profile and the extraction system influences their properties.
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