Metarhizium brunneum (strain BNL102)

Metarhizium brunneum strain BNL102 is a biological insecticide belonging to the group of entomopathogenic fungi. Its action is based on the fungus's ability to penetrate the insect cuticle and enter the body cavity of the pest.

Once attached to the surface of the host, the spores germinate, releasing specific enzymes such as chitinases and proteases, which break down the insect's chitinous layer. This process allows the fungal mycelium to penetrate the organism of the pest.

Inside the insect, the fungus reproduces actively, consuming nutrients and releasing toxins, which disrupts the host's metabolism and leads to rapid death. The infection process occurs regardless of whether the insect is feeding or resting.

An important feature of this strain is its ability to form colonies in the soil, providing a long-term protective effect for the root system of plants. The fungus remains viable in the substrate, creating a barrier against repeated pest attacks.

Unlike chemical insecticides, Metarhizium acts gradually, as time is required for the spores to germinate and for the fungal biomass to accumulate within the host's body.

The product based on BNL102 is effective against a wide range of soil-dwelling pests and insects with a hidden lifestyle. Primary targets include beetle larvae, wireworms, mole crickets, and other species living in the root zone.

It successfully suppresses population levels of various thrips and weevil species that damage crops during different growth stages. The biopreparation shows high activity against pests that have developed resistance to traditional pesticides.

Application rates depend on the type of crop, pest population density, and the method of application. Typically, aqueous suspensions are used, which are applied by drenching the root zone or spraying the soil surface.

To achieve maximum effectiveness, it is recommended to conduct treatments under conditions of high soil moisture. Soil application is most effective during the active root growth phase, when pests are at their most active stage.

The main limitation is the dependence of fungal effectiveness on environmental temperature and humidity. Optimal conditions for the development of Metarhizium are between +18°C and +28°C with soil moisture levels of at least 60%.

It is strictly prohibited to use this bioproduct in combination with systemic fungicides, as they inhibit fungal growth, effectively neutralizing the biological plant protection agent.