Influencia de diferentes cultivos agrícolas sobre el carbono orgánico total y la actividad microbiana en suelos de cinco sistemas de cultivos del municipio de Pamplona, Norte de Santander.

Abstract

The quality of the soils is influenced by their management and that can affect their physical, chemical and biological properties. A study was conducted in order to evaluate the influence of five cultivation systems on organic carbon and some physicochemical and microbial variables of the soil in producing areas of the municipality of Pamplona, Norte de Santander. In a farm on the Monteadentro village, 25 soil samples were taken at a depth of (0-10cm) and physical variables such as bulk density, texture, moisture percentage, and chemical variables such as pH, electrical conductivity, organic carbon and biological properties were determined from the ground like basal breathing. A one-way variance analysis (ANOVA) was applied, when it was significant (p <0.05), a Tukey test was used to compare means. The pH was acidic and moderately acidic; The electrical conductivity was low which characterizes these soils as non-saline. Basal respiration was greater in cultivated soils and less in the forest, while total organic carbon was greater in the forest and less in crops. It is likely that in crop systems the microorganisms are in a stress situation that causes them to generate more C-CO2 losses due to breathing.