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Soybean Cyst Nematode, Heterodera glycines, in Minnesota. D. H. MacDonald, Professor of Plant Pathology, University of Minnesota, St. Paul 55108. G. R. Noel, Research Plant Pathologist, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, and Assistant Professor of Plant Pathology, University of Illinois, Urbana 61801; and W. E. Lueschen, Agronomist, Southern Experiment Station, University of Minnesota, Waseca 56093. Plant Dis. 64:319-321. Accepted for publication 3 December 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-64-319.

In September 1978, Heterodera glycines was found approximately 550 km northwest of infestations in northern Illinois. The nematode apparently was introduced into a field in Faribault County, Minnesota, on contaminated equipment. Morphologically, it is similar to race 1, but its development on soybean differentials is dissimilar to previously described races. Subsequently, 13 other infested fields have been found.