Impacto del marabú (dichrostachys cinerea (l.) wigth et arm sobre la calidad de los suelos

The investigation began with a diagnosis of farms belonging to urban and suburban agriculture infested by Dichrostachys cinerea (L.) Wigth et Arm. They were determined in four systems of use (two systems infested by D. cinerea and two farming systems in operation for 10 years after deforestation of the marabou and put in cultivation) in the area of Becerra, Los Tellez estate in Las Tunas municipality. The objective of this study was to evaluate the quality of red brown Fersialitic soils on granitoids that reflect the degree of stability of the soils under the marabou and the changes that have occurred in the use and management practices. To evaluate the effect of the management systems (soil pH, P, organic matter), physical (apparent density, sand content, total porosity) and biological (density and biomass of worms) variables were measured on soil quality indicators. The results showed that the systems of D. cinerea were the ones with the highest index of soil quality, taking organic matter, apparent density and biomass of worms as indicators. The cultivated systems reached the lowest organic carbon accumulation, density and biomass of oligochaetes and total porosity.