In the forest-steppe conditions of the Omsk region, there are species of forest insects capable of producing outbreaks of mass reproduction. The gypsy moth is the most dangerous phyllophage, as it forms large-scale foci of high numbers. A more than 30-year period of observations of Omsk forests has been analyzed, which indicates different scales of mass outbreaks of gypsy moth. It was revealed that in 2014 the largest breeding area of the gypsy moth was recorded - 1,405,126 hectares. There is a connection between the mass appearance of the gypsy moth and other species of gnawing forest insects. Thus, significant planting areas were attacked in 2015-2016 by the pine moth - 171.5 and 86.6 hectares, respectively. A total of 16 species of leaf- and needle-eating insects were identified. Of the secondary pests, from 1991 to 2007 there was a high number of the European spruce beetle; in 1992-1993, the appearance of the big black spruce sawyer was recorded. The resulting digital material allows us to determine the peaks of mass outbreaks of gypsy moth in the Omsk region: 1996, 2005, 2014, 2023 with intervals of 9 years. At the same time, the scale of the foci and the time the population spent in the eruptive phase are different from each other. The peak of the highest gypsy moth numbers in 2005-2006 and 2022-2023 lasted for two years, and in 2013-2015 - for three years. All bacterial preparations used during outbreaks to treat forests were based on Bacillus thuringiensis (Bt) and gave high results in biological efficiency - from 77.2 to 91.3%. The established regularity of occurrence of foci of mass reproduction of the gypsy moth, the predictability of changes in numbers towards an increase, indicates the need for protective measures at the very beginning of the population increase, which could significantly reduce the damage from the impact of this phyllophage.
phyllophages, environmentally friendly preparations, mass outbreaks
1. Erohova M.D., Orlinskiy A.D. Opasnye lesnye patogeny Phytophthora ramorum i Phytophthora kernoviae // Zaschita i karantin rasteniy, 2021. № 2. S. 34-37. EDN: https://elibrary.ru/GCLLIE
2. Gninenko Yu.I. Biologicheskaya zaschita lesov: osnovnye tendencii sovremennogo razvitiya // Zaschita i karantin rasteniy, 2023. № 6. S. 9-10. EDN: https://elibrary.ru/NKUVRX
3. Lyamcev N.I. Dinamika chislennosti neparnogo shelkopryada i zelenoy dubovoy listovertki pri sovmestnom massovom razmnozhenii // Lesovedenie, 2023. № 2. S.132-141. EDN: https://elibrary.ru/AKRJSB
4. Pavlyushin V.A., Novikova I.I., Boykova I.V. Perspektivy i vozmozhnosti mikrobiologicheskoy zaschity rasteniy dlya povysheniya urovnya ekologicheskoy bezopasnosti v agrocenozah // Zaschita i karantin rasteniy, 2022. № 4. S. 10-18. EDN: https://elibrary.ru/OSFPAZ
5. Barayschuk G.V. Biologicheskaya zaschita rasteniy: ucheb. posobie. Omsk: Izd-vo FGOU VPO OmGAU, 2006. 142 s. EDN: https://elibrary.ru/QKXRZD
6. Natural occurrence of Bacillus thuringiensis in Lithuanian forest ecosystems / L.Thomsen, J. Eilenberg, P. Zolubas [et al.] // Capturing the potential of biological control: 7th European meeting at Vienna, (Austria), 22-26 March 1999. Dijon: IOBC/WPRS, 2000. P. 279-282.
7. Whalon M.E., MsGaughey W.H. Bacillus thuringiensis: use and resistance management / Insecticides with novel modes of action: mechanisms and application / ed. by Ishaaya I., Degheele D. Berlin: Springer, 1998. P.106-137.
8. Nikiforov A.A. Sozdanie vysokotochnyh trehmernyh modeley ob'ektov sadovo-parkovogo hozyaystva i gorodskogo proektirovaniya s primeneniem bespilotnyh letatel'nyh apparatov (BPLA) // Cifrovye tehnologii v lesnom sektore: materialy konferencii / pod red. A.A. Dobrovol'skogo [i dr.]. SPb.: SPbGLTU, 2022. S. 71-73. URL: https://e.lanbook.com/book/288926 (data obrascheniya: 3.01.2024). EDN: https://elibrary.ru/VQIVOL
9. Skudneva O.V. Bespilotnye letatel'nye apparaty v sisteme lesnogo hozyaystva Rossii // Izvestiya vysshih uchebnyh zavedeniy. Lesnoy zhurnal. 2014. № 6. S. 150-154. EDN: https://elibrary.ru/TALVRL
10. Solov'ev I.B., Habarov S.P. Klient-servernoe prilozhenie dlya rascheta traektorii dvizheniya BPLA // Cifrovye tehnologii v lesnom sektore: materialy konferencii / pod red. A.A. Dobrovol'skogo [i dr.]. SPb.: SPbGLTU, 2022. S. 89-91. URL: https://e.lanbook.com/book/288926 (data obrascheniya: 3.01.2024). EDN: https://elibrary.ru/UGVSOO
11. Lepidocid, SK-M na osnove B.thuringiensis subsp.kurstaki (TU Lepidocid, 1998).
12. Gosudarstvennyy katalog pesticidov i agrohimikatov, razreshennyh k primeneniyu na territorii Rossiyskoy Federacii. M., 2014.S. 15.
13. Postanovlenie Pravitel'stva Rossiyskoy Federacii ot 9 dekabrya 2020 g. № 2047 "Ob utverzhdenii Pravil sanitarnoy bezopasnosti v lesah". M. 19 s.
14. Barayschuk G.V. Ekologicheski bezopasnaya zaschita lesov Omskoy oblasti vo vremya massovogo razmnozheniya neparnogo shelkopryada Lymantria dispar L. // Vestnik KrasGAU. 2008, № 6. S.63-67. EDN: https://elibrary.ru/KOHCZV
15. Kovalev A.V., Cikalova P.E. Prediktory povrezhdeniya nasekomymi lesnyh nasazhdeniy po sputnikovym dannym na primere sibirskogo shelkopryada // Lesovedenie, 2023. № 2. S.150-160. EDN: https://elibrary.ru/AKBVXY
16. Obzor sanitarnogo i lesopatologicheskogo sostoyaniya lesov Omskoy oblasti za 2011, 2012, 2013, 2015, 2016, 2017, 2018, 2019, 2020, 2021. Novosibirsk.
17. Il'inskiy A.I. Neparnyy shelkopryad i mery bor'by s nim. M.-L.: Goslesbumizdat, 1959. S. 62.
18. Utkina I.A., Rubcov V.V. Sovremennye aspekty issledovaniy roli nasekomyh-fillofagov v lesnyh soobschestvah // Lesovedenie, 2023, № 2, S. 201-214. EDN: https://elibrary.ru/ARXWDU
19. Leschina M.M. Zaschita lesov Omskoy oblasti ot neparnogo shelkopryada Lymantria dispar L.// XIX Vseros. (nac.) nauch.-tehn. konf. studentov i aspirantov s 3 po 16 aprelya 2023 goda, g. Ekaterinburg. Ekaterinburg: UGLTU. S. 174-178.
20. Filial FBU "Roslesozaschita" - "CZL Novosibirskoy oblasti". Reestry lesnyh uchastkov, na kotoryh rekomenduetsya provedenie meropriyatiy po zaschite lesov v razreze lesnichestv i lesoparkov / pis'mo № 01-06/934 ot 25.10.2023.
21. Filial FBU "Roslesozaschita" - "CZL Novosibirskoy oblasti". Prognoz sanitarnogo i lesopatologicheskogo sostoyaniya lesov Omskoy oblasti na pervoe polugodie 2024 g.
