Bagheri A. 2018. Bacterial canker of tomato. Plant Pathology Science 7(2):14-21. DOI: 10.2982/PPS.7.2.14 Bacterial canker of tomato caused by Clavibacter michiganensis subsp. michiganensis is one of the most important and economical diseases of tomato. Pale, yellow, dry leaves and shoots with colorless strips are the main symptoms on infected plants. The canker is formed in the last stages of the disease. Use of pathogen-free seeds or seedlings, implementation of quarantine regulations in infected areas, fallow and rotation with plants out of the Solanaceae family, plowing after tomatoes harvesting and drip irrigation are the main management strategies for disease control. Spraying copper chemicals can also help disease control.