Preliminary diagnosis of plant diseases caused by bacteria. Primary differentiation of the genera of palnt pathogenic bacteria. Agrobacterium. Corynebacterium. Erwinia: the Amylovora and Herbicola croups. Erwinia: the Carotovora group. Pseudomonas: the non-fluorescent pseudomonads. Pseudomonas: the fluorescent Pseudomonads. Xanthomonas. Mollicutes and rickettsia like bacteria in plants. The sugarcane ratoon stunting disease bacterium. Bacteriophages for the identification of plant pathogenic bacteria. Preservation of microbial cultures. Valid names of plant pathogenic bacteria. Bacterial plant pathogens recorded in Australia. Media and methods for isolation and diagnostic tests.