Effect of Crop and Weed Species on Development of a Minnesota Population of Heterodera glycines Race 5 After One to Three Growing Periods. M. E. Sortland, Research Assistant, Department of Plant Pathology, University of Minnesota, St. Paul 55108. D. H. MacDonald, Professor, Department of Plant Pathology, University of Minnesota, St. Paul 55108. Plant Dis. 71:23-27. Accepted for publication 15 September 1986. Copyright 1987 The American Phytopathological Society. DOI: 10.1094/PD-71-0023.

Heterodera glycines race 5 developed to high levels on soybean, medium levels on adzuki bean, low levels on pea, and did not develop on alfalfa, corn, lamb's-quarters, oat, pigweed, sugar beet, sunflower, or wheat. These crops and pea could be used in a crop rotation scheme to reduce this nematode population in the field, but the rotation, to be most effective, must extend through two seasons and preferably beyond three.

Keyword(s): host range, soybean cyst nematode.