In this work, biochar (BC), a co-product of the fixed bed gasification process Pinus patula wood pellets (PL) and chips (CH), was characterized as soil amendment. The physicochemical properties mineral content pelletâs (PL-BC) (CH-BC) were analyzed following NTC5167 Colombian technical standard. BET surface area values BCs 367,33 m2/g 233,56 for PL-BC CH-BC, respectively, pore volume 0,20 cm3...