“…Therefore, for the 33 remediation of hydrocarbons alternative sources of nutrients with a better cost/benefit ratio have been 34 tested. Among these sources, we can mention urea (Simpanen et al, 2016); various biowastes like soy 35 cake (Dadrasnia and Agamuthu, 2014), poultry droppings (Ezenne et al, 2014), oil palm empty fruit 36 bunch, sugarcane bagasse (Hamzah et al, 2014), fish meal (Dias et al, 2015); NPK inorganic fertilizers 37 (Silva-Castro et al, 2015) and other commercial bioremediation agents (Dias et al, 2012). For each 38 particular case, the selection of the best source of nutrients seems to depend on the characteristics of the 1 soil under treatment, because the microbiota thriving in each soil is different and can exhibit dissimilar 2 metabolic requirements.…”