2009-03-282009-03-281994https://hdl.handle.net/10365/2957American Phytopathological SocietLeafy spurge.Biological pest control agents.Weeds.Phytopathogenic microorganisms.Comparative virulence of strains of Rhizoctonia spp. on leafy spurge (Euphorbia esula) and disease reactions of cultivated plants in the greenhouse