Determinación de carbono orgánico en el suelo andino de Ichubamba y Guargualla, parroquia Cebadas.

Abstract

The objective was to determine organic carbón in the andean soil of Ichubamba and Guargualla, Cebadas Parish. The organic carbon content of the soil (COS) was quantified at two depths (030 and 30-60 according to the GIDAC methodology) in the Ichubamba and Guargualla moorland, located in Cebadas parish, Chimorazo province in different lithologies JP (Quartzite,shale, phyllite, volcanic meta), PT (agglomerated Andesite, lava and dacite) and dg (Glacial deposits). A total of 72 points were established by random stratified sampling. The physicalchemical parameters (hydrogen potential: pH and electrical conductivity: EC), physical (texture, structure, color) and chemical (organic matter: MO and COS) were determined by estandardized methods and analyzed by GIDAC laboratory protocols. Descriptive statistics in the analysis of COS and MO at different depths and different types of lithologies indicate that soils suffer a difference in all parameters; in this way, average pH values were obtained ranging from mildly acidic (5,5) to slightly acidic (6,7); the electrical conductivity of 0,32 dS/m to 0,82 dS/m; the MO reported high values at lower depth, while at greater depth low values will be recorded. In conclusión, the null hypothesis is rejected; the COS presents significant differenc es according to the sector, being higher in Ichubamba tan in Guargualla. It is recommended to perform Nuclear Magnetic Resonance Analysis (NMR) to know about the quality of the organic matter presented by the Ichubamba and Guargualla moorland soils.