Neovossia indica (Mitra) Mundkur, causing Karnal bunt of wheat is mainly a soil-borne pathogen, whose teliospores germinate and produce a crop of allantoid secondary sporidia, which become air-borne and cause infection (Dhaliwal and Singh, 1986). Seed treatment and foliar spray fungicides have been tested to control the disease (Singh et al., 1985, 1991).