The impact of the biological agent Biojodis on the incidence of pathogenic fungi in winter wheat and spring barley

The research was designed to study the use of a biological agent Biojodis for winter wheat and spring barley seed and plant treatment against seed borne fungal stem base and leaf diseases as well as against toxic fungi occurring on harvested grain. Seed treatment with Biojodis did not exert any effect on seed contamination with Fusarium spp.; however an especially efficient control of seed borne stem base rots of winter wheat and spring barley was obtained. However, under the field conditions, plant damage by stem base rot of the crops sown with treated and untreated seed did not differ. The application of Biojodis did not exert any effect on winter wheat and spring barley foliar disease incidence. However, Biojodis reduced winter wheat grain infection with Fusarium genus fungi on harvested grain. A significant reduction in the content of these fungi was identified having used Biojodis for seed treatment; and three spray applications during the growing season. Biojodis reduced the content of Fusarium sporotrichioides in internal tissue of winter wheat grain, inappreciably affected F. poae, F avenaceum and F. culmorum, and hardly had any impact on F langsethiae and F. tricinctum. However, Biojodis did not show any significant effect on spring barley grain contamination with fungi.