Soca 40 rickets;41 RSD; It is one of the major diseases of sugar cane whose causative agent is the bacteria Xyli subsp. leifsonia. leifsonia ( Denis et al., 1984, ) (Evtushenko et al, 2000 ). The disease was first discovered in Queensland in 1944 as a stunt in the variety Q 28. Currently it is widely distributed in the canicultoras of the world areas.
