ABSTRACT
Potato is a staple food in many parts of the world and an integral part of much of the world's food supply. It is the world's fourth-largest economical food crop following maize, wheat, and rice. Bacterial soft rot is the most serious causes of potato losses in storages. Soft rot bacteria infect potato tubers that have been damaged by mechanical injury or the presence of other diseases. Blackleg and tuber soft rot are all similar diseases caused by several types of soft rot bacteria. Blackleg and tuber soft rot occur wherever potatoes are grown. When soft rot develops, tuber flesh decays and becomes cream to tan color. There are many ways in which a plant can become infected by a bacterial soft rot. Diagnosis of dry rot can be complicated by the presence of soft rot bacteria, which often invade dry rot lesions, particularly if the tubers have been stored at high humidity and condensation has occurred on the surfaces.
