Identification of the causal organism of bacterial wilt of mulberry and its biovars Evaluation and identification of antagonistic bacteria against different biovars of Ralstonia solanacearum and their active metabolites Advance of the Classification in Ralstonia solanacearum Species STUDIES ON THE STRAINS AND THE OTHER PHYSIOLOGICAL PROPERTIES OF PSEUDOMONAS SOLANACEARUM OF THE TOBACCO IN GUANGXI Identification of the pathogen causing bacterial wilt of sesame and its biovars