Bacterial wilt and tuber brown rot as a potential threat to potato production in Northeast Florida.
Bacterial wilt (BW) and tuber brown rot caused by Pseudomonas solanacearum was a major disease problem affecting potatoes grown in NE Florida until the mid 1940s. Historical records suggest that reductions in the incidence and severity of BW in the area coincided with the introduction and rapid grower acceptance of cv. Sebago, which has some tolerance of BW and was the predominant cultivar grown in NE Florida for nearly 40 yr. Recently Atlantic, which has greater yield potential and is more acceptable to potato chip processors has replaced Sebago. It is, however, highly susceptible to BW. The history of BW in the area is traced, incidence and severity of the disease in Atlantic and Sebago compared, and the potential for losses due to BW is discussed.