Outbreak of a Stem Necrosis on Chrysanthemum Incited by Pseudomonas cichorii in Florida. J. B. Jones, Assistant Professor, University of Florida, IFAS, Agricultural Research and Education Center, Bradenton 33508. A. W. Engelhard, Professor of Plant Pathology, University of Florida, IFAS, Agricultural Research and Education Center, Bradenton 33508, and B. C. Raju, Chief Plant Pathologist, Yoder Bros. of Florida, Inc., Alva, FL 33920. Plant Dis. 67:431-433. Accepted for publication 22 September 1982. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-431.

An outbreak of a stem necrosis on chrysanthemum was observed in two commercial fields in Florida in the winter of 1982. About 2.25 acres were lost to the disease in one field. No leaf symptoms were associated with the disease. Symptoms overlapped those incited by Fusarium solani. Pseudomonas cichorii was consistently isolated from diseased tissue and was demonstrated in subsequent inoculation tests to incite the disease.