Determinaciónde las clases texturales y la concentración de óxidos en el suelo provenientes de la provincia de Loja, sur del Ecuador

Abstract

Abstract: Soils are extremely important natural resources, conditioned by multiple factors such as climate, topography, mineral content, biota and time. The study of soil is important in order to determine what type of texture it has, as well as the presence of oxides and how they relate to each other. The present research work seeks to determine the textural classes and the concentration of oxides in the soil from the province of Loja, southern Ecuador. Samples were taken from 5 locations in Loja: Villonaco, Yangana, Celica, Colaisaca and Aguangora. The textural class was determined by the Bouyoucus method using 1N sodium hydroxide and 5 ml of supersaturated sodium oxalate as dispersants, for the oxides it was done by x-ray fluorescence (XRF) and microwave acid digestion. The results based on the USDA textural triangle indicate that in the Colaisaca and La Aguangora zones they present a clay loam textural class, in the Yangana, Celica and Villonaco zones they evidenced a sandy loam class. Finally, high amounts of silica were detected in all the study areas.