In Western Siberia, where soybean production is expanding, there is a problem of damage to crops by phytopathogens that reduce yield and product quality. The research was conducted from 2020 to 2024 in the experimental fields of the Siberian Federal Research Center of AgroBiotechnologies. Zoned varieties and cultivars of Siberian breeding were used as samples. The influence of weather and climatic conditions on the development of soybean diseases has been revealed. During 2020 and 2024, intense precipitation was observed in the second half of the growing season, which led to the intensive development of leaf-stem infections. In the period from 2021 to 2023, the aridity of the first half of the growing season and limited precipitation in the second half led to an almost complete absence of plant morbidity. The results show that the Gorinskaya variety shows a tendency towards complex resistance, and SNK-154 shows complex resistance to bacteriosis. Susceptible varieties have also been identified that require further adaptation to the conditions of the region.

Korobeinikov Alexander S., Ashmarina Lyudmila F., Alabugina Maria L.

1. Fadeeva A. N., Ibatulina R. P., Tagirov M. Sh., Abrosimova T. N. About the productivity potential of leguminous crops and its increase. Kormoproizvodstvo, 2012;1:21–23. EDNOOBZLT (in Russ.).
2. Kashevarov N. I., Gorin V. E., Lyakh A. A. Soybean cultivation in Western Siberia: recommendations, Novosibirsk, Sibirskii nauchno-issledovatel'skii institut kormov, 1999, 73 p. (in Russ.).
3. Ashmarina L. F., Konyaeva N. M., Gorobey I. M. Soybean diseases in Western Siberia. Vestnik rossiiskoi sel'skokhozyaistvennoi nauki, 2008;1:37–39. EDNIJPLLZ (in Russ.).
4. Piven V. T., Baranov V. F., Dryakhlov A. I. Soybean protection. Zashchita i karantin rastenii, 2007;3:77–106. EDNHZGLOB (in Russ.).