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A Method of Obtaining Viable, Mycelium-Free Ooospores of Aphanomyces euteiches Using Live Water Snails. H. S. Bhalla, Research Assistant, Department of Plant Pathology, University of Wisconsin 53706; J. E. Mitchell, Professor, Department of Plant Pathology, University of Wisconsin 53706. Phytopathology 60:1010-1012. Accepted for publication 27 January 1970. DOI: 10.1094/Phyto-60-1010.

The use of water snails to prepare oospore suspensions free of mycelia from cultures of A. euteiches is described. The oospores are infectious and appeared to initiate infections over a period of several days. A difference among strains of the fungus in oospore production is noted.