Moko disease caused by the bacterium Ralstonia solanacearum race 2 is one of the most restraining phytosanitary problems to deal with banana and plantain production in Colombia. Infected areas must be carefully controlled to prevent dispersal. Control measures include eradication of both infected and apparently non-infected plant within a 5 meters radius around the infected plant treated with herbicide. Survival determination of this bacterium was carried in field conditions taking soil and tissue samples every 15 days around the infected plant. SMSA medium was used to isolate this bacterium, Isolates were screened by biochemical and pathogenicity test in banana plants Grand Naine cultivar. Under field conditions larger bacterial populations in soil were found at a distance of 1 meter away and 10 centimeters deep from the infected plant and up to 150 days after the treatment. Survival was increased in infected plant tissues where the pathogen could be recovered after 195 days.