Abstract. Insects are considered organisms that can be controlled by the Beuveria bassiana fungus. The mode of action of the fungus is through contact, the parasite-host insect interaction being encouraged. From this interaction there is the death of the infected organism. In this case, the target (infected) organism is an insect of the order Orthoptera (locust), the genus Oedaleus (sp. Asiaticus). The purpose of the paper was to evaluate the effect of parasite spores on mortality and, implicitly, population reduction of the locusts. The working method consisted in determining the biological activity of the local Beuveria bassiana (G07) strain against locusts. Thus, it was shown that 100% bioactivity was present at 2.11 x 109 spores/ml in laboratory studies and showed 83.8% bioactivity against locusts from genus Angaracris at 3.5 * 1013 spores/ha, in the field experiment (pasture). So, it can be concluded that the Beauveria bassiana biological insecticide can be used at 3.5 * 1013 spores/ha against locusts in field conditions.

fungi, insect, pasture, bioinsecticide

biology

Presentation: oral