Abstract
Ratoon stunt (RSD), caused by the fastidious bacterium Leifsonia xyli subsp. xyli (Lxx), is considered the main disease of sugarcane due to difficulty of identification in field, which hampers its control. Information on disease impact on sugarcane yield is limited in Brazil, even though it is disseminated in all states and host cultivars. The main measures of RSD control are diagnostic a…