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Verticillium Wilt of Alfalfa in Wisconsin. C. R. Grau, Department of Plant Pathology, University of Wisconsin, Madison 53706. P. A. Delwiche, Department of Plant Pathology, University of Wisconsin, Madison 53706, R. L. Norgren, Wisconsin Department of Agriculture, Trade and Consumer Protection, Madison 53702, T. E. O'Connell, Dane County Extension Office, Madison 53703, and D. P. Maxwell, Department of Plant Pathology, University of Wisconsin, Madison. Plant Dis. 65:843-844. Accepted for publication 10 March 1981. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-843.

Verticillium wilt of alfalfa, caused by Verticillium albo-atrum, was diagnosed in Wisconsin in the summer of 1980. The disease was identified in 16 counties. This is the first report of Verticillium wilt of alfalfa in the north central states.

Keyword(s): Medicago sativa.