Production of Fungal Inoculum Using a Substrate of Perlite, Cornmeal, and Potato-Dextrose Agar. Monte R. Miles, Graduate Research Assistant, Department of Plant Pathology, University of Minnesota, St. Paul 55108. Roy D. Wilcoxson, Professor, Department of Plant Pathology, University of Minnesota, St. Paul 55108. Plant Dis. 68:310. Accepted for publication 4 October 1983. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-310.

A substrate of perlite, cornmeal, and potato-dextrose agar was used to rapidly produce large numbers of conidia of Bipolaris sorokiniana without contamination for field inoculations. The medium was also used for producing large quantities of conidia of Drechslera oryzae and Alternaria alternata. It should be useful for many other fungi.