Possibility of simultaneous use of entomopathogenic fungi Beauveria bassiana _Bals.-Criv. Vuill. and antagonistic fungi Trichoderma spp.

V biotičnem varstvu rastlin se uporablja žive organizme, ki zatirajo škodljive organizme in obenem ne škodujejo zdravju ljudi in živali. Med biotične agense se uvrščajo tudi entomopatogena gliva Beauveria bassiana in antagonistične glive iz rodu Trichoderma, ki smo jih uporabili v naši raziskavi. V laboratorijskem poskusu smo ugotavljali antagonistično delovanje med glivo Beauveria bassiana Bals. Vuill. in glivami Trichoderma spp. pri dveh temperaturah 15 in 25 °C. Izbrani so bili izolati T. asperellum, T. gamsii, T. atroviride_T-R8 in T. koningiopsis_T-R15 in B. bassiana iz pripravka Naturalis. V obdobju desetih dni smo spremljali rast micelijev gliv B. bassiana in Trichoderma spp. V raziskavi smo ugotovili, da je temperatura 25 °C bolj optimalna za rast micelijev vseh obravnavanih vrst. Ugotovili smo, da je gliva B. bassiana najbolje rasla, ko so bile Trichoderma spp. inokulirane v dvojno kulturo sedmi dan po nacepitvi B. bassiana. Izrazito inhibicijo rasti glive B. bassiana s strani gliv iz rodu Trichoderma smo ugotovili pri temperaturi 25 °C, manjšo pa pri temperaturi 15 °C. Vse proučevane vrste Trichoderma spp., razen T-R15, imajo na B. bassiana fungiciden učinek.Biotic plant protection uses living organisms which suppress harmful organisms and at the same time do not harm the health of humans and animals. Biotic agents include the entomopathogenic fungus Beauveria bassiana and antagonistic fungi from the genus Trichoderma spp., which were used in our research. In a laboratory experiment, we studied the antagonistic activity between the fungus Beauveria bassiana Bals. Vuill. and fungi Trichoderma spp. at two temperatures 15 and 25 °C. The isolates of T. asperellum, T. gamsii, T. atroviride_T-R8 and T. koningiopsis_T-R15 and B. bassiana from the preparation Naturalis were selected. Over a period of ten days, the growth of the mycelia of the fungi B. bassiana and Trichoderma spp. was monitored. In the research, we found that the temperature of 25 °C is more optimal for the growth of mycelia of all the studied species. We found that the fungus B. bassiana grew best when fungi Trichoderma spp. were inoculated into the double culture on the seventh day after the inoculation of B. bassiana. Pronounced inhibition of the growth of the fungus B. bassiana by fungi from the genus Trichoderma was found at the temperature of 25 °C, and a smaller one at the temperature of 15 °C. All studied species of Trichoderma, except T-R15, have a fungicidal effect on B. bassiana