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Occurrence in the United States of a Marigold Leaf Spot Incited by Pseudomonas tagetis. D. J. Styer, Research Assistant, Department of Plant Pathology, University of Wisconsin, Madison 53706. G. L. Worf, and R. D. Durbin, Professor, Department of Plant Pathology, and Research Leader, Plant Disease Resistance Research Unit, USDA, Department of Plant Pathology, respectively, University of Wisconsin, Madison 53706. Plant Dis. 64:101-102. Accepted for publication 21 March 1979. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1980. DOI: 10.1094/PD-64-101.

Several cultivars of marigold (Tagetes erecta L.) in a Milwaukee insect control trial garden were damaged by a disease of unknown etiology during September 1978. A gram-negative, fluorescent bacterium isolated from the leaf spots was identified as Pseudomonas tagetis Hellmers. This is believed to be the first report of this pathogen in the United States.