La acumulación de materia orgánica mejora el suelo en un sistema agroforestal

Abstract

The study consisted of analyzing the content of organic matter (OM) in the soil and the changes that occurred in some physical properties. Soil properties such as hydrophysical properties, moisture, bulk density (Da), total porosity and field capacity (CC) were evaluated. Between the years (2012 to 2021), the samples were described in the field as the color and type of structure in the laboratory, the mechanical composition was determined presenting a sandy clay loam texture (sand 48.5%, silt 25.1% and clay 26.4%), pH 6.4, MO 1.4%, Da 1.4 g cm-3 and CC 22.3%. The soil was classified as Anthrosols, and samples were taken at a depth of 0 to 20 cm. Thirty samples were analyzed, and the results show a poorly defined A horizon that presents large to medium blocks characteristic of a B horizon, this soil was hosted more than 23 years ago, with prolonged agricultural use and later with agroforestry use at present as an organic orchard, which has a low carbon content of 0.84%, these soils have been preserved with vegetation cover, concluding that the carbon content has not led to soil improvement in 10 years of implantation of the agroforestry system.