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      Caracterización de la turba subtropical del departamento Islas del Ibicuy (Entre Ríos, Argentina) Translated title: Characterization of the subtropical peat of the Islas del Ibicuy Department (Entre Ríos, Argentina)

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          Abstract

          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.

          Translated abstract

          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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          National inventory of organic wastes for use as growing media for ornamental potted plant production: case study in Spain.

          An inventory of materials suitable for use as growing media for ornamental potted plant production in Spain has been prepared. Special attention has been paid to solid organic wastes generated by production, industrial and consumer activities. Information obtained from this study has been organised into two data bases. Data base 1 contains the "General Characteristics" file of more than 105 materials. In this file, data are available regarding generation points, material availability, uses, cost, disposal expenses, etc. Data base 2 is comprised of the "Specific Properties" file of 63 materials selected from data base 1. The main physical, chemical and biological properties of these materials as container media have been characterised, and the results obtained have been compiled. Finally, a computerised data bank has been created which can be found in the home page of the Spanish Ministry of Agriculture, Fisheries and Food (http://agritel2.mapya.es/sustratos/).
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              Sustratos: Propiedades y Caracterización

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                agrisc
                Agriscientia
                Agriscientia
                Facultad de Ciencias Agropecuarias. Universidad Nacional de Córdoba (Córdoba )
                1668-298X
                December 2011
                : 28
                : 2
                : 137-145
                Affiliations
                [1 ] INTA Argentina
                [2 ] UNL Argentina
                Article
                S1668-298X2011000200005
                665a87e2-e071-42dd-b5f9-5b85914af37e

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Argentina

                Self URI (journal page): http://www.scielo.org.ar/scielo.php?script=sci_serial&pid=1668-298X&lng=en
                Categories
                AGRONOMY

                Horticulture
                Substrate,Paraná Delta,Subtropical peat,Sustrato,Delta del Paraná,Turba subtropical
                Horticulture
                Substrate, Paraná Delta, Subtropical peat, Sustrato, Delta del Paraná, Turba subtropical

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