The oral presentation is based on an investigation carried out between 2017 (a) (b) and 2018 (a). This research was carried out in a plantation of A. mangium located in the village of Planas, department of Meta (Colombia). This research’s objective was to study the effects of biochar obtained through pyrolysis of pruned biomass of Acacia mangium on the chemical properties of soils and the volume of wood in a plantation of Acacia mangium Willd in the Colombian Orinoquía. The purpose was exploring alternatives to mitigate soil degradation has been gaining importance in recent years. Biochar promises to improve properties such as soil fertility and soil conditioning. This research involved an experiment with different levels of biochar in associating it with some chemical properties and the wood yield of A. mangium. To do this, we used a design including nine treatments and three repetitions of each treatment, employing two materials: biochar from Acacia mangium W. (BAM) and synthetic fertilizer (SF). We used a Bayesian principal component analysis to reduce dimensionality, and the two extracted dimensions were labeled by treatment to visualize their grouping. We validated the grouping using cluster analysis algorithms. Volume in wood was used as the response, and the same soil variables were used to run a regression by partial least squares where the explanatory variables were characterized by relative importance.  In terms of results, We found an increase in the different chemical variables of the soil analyzed in treatments with BAM and BAM + SF and an increase in the volume of the stem of the trees in treatments with BAM + SF. The analysis by partial least squares showed how the EC and SOC variables were the most important in explaining the volume of wood. With regard to the conclusions, the responses of the different variables analyzed increased with the addition of biochar, either alone or mixed with synthetic fertilizer. It was also possible to determine that the volume of A. mangium wood was influenced by soil chemical variables. These mixtures, especially those composed of the higher levels, can cause an increase in the response of the set of variables considered. Higher values found in the different variables of chemical properties may be associated with an increase in stem volume and dry weight in A. mangium trees established in plantations in the region.