Bacterial Diseases of Onions in Georgia

Bacterial diseases are among the major production and economic challenges that onion growers face in Georgia. There are six bacterial diseases that commonly affect onion foliage and bulbs in the state. These diseases are difficult to manage and rely mainly on cultural practices and the use of protective bactericides. Host resistance is limited with little information on pathogen biology and the infection process. This bulletin provides a comprehensive outlook on specific symptoms associated with bacterial diseases, modes of infection and spread, and potential management options.