The new domestic biological preparation IPSBOVER based on the entomopathogenic fungus Beauveria bassiana (Bals.) Vuill., strain ILNAN 20-08, producing biologically active substances, has been created to control populations of Ips acuminatus, Ips sexdentatus, and Ips typographus in the emerging outbreaks of coniferous stands and protect harvested pine and spruce wood from bark beetle damage during storage. The biopreparation eliminates stem insect pests when fungal hyphae penetrate their integuments, resulting in toxin-induced damage. It also reduces the viability and fecundity of surviving xylophages. State registration trials of the biopreparation IPSBOVER were conducted in coniferous stands within the forest fund of state forestry institutions during 2024–2025 to assess its biological efficacy. Results of state registration trials during 2024–2025 indicate that the biological efficacy of the biopreparation in emerging outbreaks of coniferous stands using modernized pheromone traps was 65.1 % and 56.9 % against Ips acuminatus, 60.6 % and 55.1 % against Ips sexdentatus, 62.2 % and 56.9 % against Ips typographus. When applied to harvested wood, efficacy was 51.7 % and 54.0 % against Ips acuminatus on pine and 52.8 % and 57.8 % against Ips typographus on spruce.
State registration of the biopreparation IPSBOVER (Beauveria bassiana (Bals.) Vuill., strain ILNAN 20-08) has been successfully completed, evidenced by Certificate No. 7718. The state registration number is 06-0137, issued on December 17, 2025. The biopreparation is included in the Addendum to the State register of plant protection products and fertilizers approved for use in the Republic of Belarus dated December 17, 2025. Methods have been developed for the application of the biopreparation using modernized pheromone traps to control bark beetle populations in emerging outbreaks in coniferous stands and to treat harvested pine and spruce wood against stem pests during storage.

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