THE BENEFITS OF ACACIA BERLANDIERI BENTH (FABACEAE) IN THE PHYSICAL AND CHIMICAL PROPERTIES OF THE SOIL IN THE NORTH OF COAHUILA (Atena Editora)

Abstract

With the purpose of knowing the edaphic benefits of the guajillo (Acacia berlandieri Benth), the present investigation was carried out in the "La Esmeralda" ranch, municipality of Zaragoza, Coahuila; for which, six representative sites were chosen; eight soil samples were collected at each site, four facing north and four facing south of the canopy, in both orientations, at 0.50 m and 1.50 m, at two depths from 0 to 5 cm and from 5 cm to 10 cm. All the samples were sent to the laboratory to determine the pH, clay, sand, silt, organic matter, nitric nitrogen, total carbonates and electrical conductivity. The analyzes indicate that there are significant differences (P< 0.05) between orientation sites under aerial cover and adjacent area, for C.E, N-No3 and M.O. In relation to the C.E. and the N-No3 in the north orientation under the canopy with 0.734 mmhos/cm and 150.5 ppm, respectively, were higher by 0.23 and 0.70% than the rest of the treatments. Regarding depths, significant differences were only found for the M.O., C.E. and CaCO3 being the 0-5 cm layer with the highest concentrations. The results indicate that Acacia berlandieri plays an important role in the contribution of M.O. and N-NO3 to the soil and that the north orientation of the bush crown is a potential site for the establishment of grasses compatible with it.