Rosellinia sp.: is a facultative parasite present in the main grow cacao regions from Colombia.Its importance is correlated with the climate being greater in the moderate warms.Until today there isn´t a precise control method.Then, it is necessary to seek alternatives like to research the effect of some disinfectants applied on the soil like Formaldehyde, Sodium Hypoclorite among others.The Castor-oil is highly susceptible to the fungus and can to use like indicator plant of its persistence in the soil.