No abstract

Study of the biological activity of Trichoderma included 4 isolates of T. asperelleum, T. harzianum, T. atroviride and plant pathogens: Fusarium avenaceum, F. culmorum, F. graminearum, F. poae, Oculimacula yallundae and Rhizoctonia cerealis. The cultures were grown as dual culture (pathogen/antagonist) under the laboratory conditions and the linear growth of the fungi was compared in the following days. In the greenhouse experiment, the influence of Trichoderma fungi on the mass of aboveground parts of maize, winter wheat and rapeseed was evaluated. Trichoderma isolates showed significant antagonistic activity to the pathogens tested in in vitro experiment. In both greenhouse tests, the beneficial effect of Trichoderma spp. was found on the mass of aboveground parts of plants in combination with wheat and oilseed rape. The results obtained in combination with maize showed no significant differences.