Occurrence of Pseudomonas corrugata on Tomato in California. Mingtan Lai, Plant Pathologist, California Department of Food and Agriculture, Sacramento 95814. D. C. Opgenorth, Plant Pathologist, and J. B. White, Agricultural Biological Technician, California Department of Food and Agriculture, Sacramento 95814. Plant Dis. 67:110-112. Accepted for publication 7 September 1982. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-110.

Tomato pith necrosis was detected for the first time in the United States on the tomato cultivar Casino Royal in San Diego, CA. Symptoms of infection were stunting, stem lesions, and necrosis of the pith, which produced scattered hollow areas. Based on physiological, biochemical, and pathogenicity tests, the pathogen was identified as Pseudomonas corrugata.