Evaluación de la materia orgánica mediante parámetros físico-químicos del suelo, cuenca alta del río Patulú

Abstract

The present work evaluated the organic matter content through the physicochemical parameters: bulk density, texture, pH, electrical conductivity and soil moisture in the Patulú river basin of the San Isidro parish in Guano canton in 2022. Fifteen plots were established, which are the sampling points, corresponding to thirty soil samples obtained at two depths: the first from 0.0 m to 0.70 m and the second from 0.70 m to 1.20 m. Three repetitions comprise the physical-chemical parameters (% humidity, pH, electrical conductivity, bulk density, texture) and % M.O (organic matter). The results of organic matter are higher at depth 1 (6.06%) compared to depth 2 (3.31%); humidity at depths 1 and 2 showed values of 30.09% and 26.39%, respectively, at depth of 0 m - 0.70 m the electrical conductivity obtains 42.68 μS/cm and 27.71 μS/cm at depth of 0.70 m - 1.20m, the values achieved in the bulk density at the two depths range from 0.965 g/cm3 to 1.1 g/cm3 and the pH at both depths obtained similar values. Therefore, the alternative hypothesis is accepted because physicochemical parameters influence organic matter where there is a weak direct correlation with electrical conductivity and bulk density at the first depth and a moderate positive correlation with bulk density, moisture, and electrical conductivity at the second depth. It recommends encouraging the care and natural bioremediation of the Cuenca Alta in Patulu River.