O. M. Minaeva1, 2, E. E. Akimova1 , T. I. Zyubanova1, A. V. Kravets1 , N. N. Tereshchenko3
1 Siberian Research Institute of Agriculture and Peat – a branch of the Siberian Federal Scientific Center of Agrobiotechnologies of the Russian Academy of Sciences, Tomsk, Russia
2 Tomsk State University, Tomsk, Russia
3 Tomsk State University of Control Systems and Radioelectronics, Tomsk, Russia
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Volume 25 No. 7
Date of paper submission: 15.07.2024, date of review: 10.03.2025, date of acceptance: 14.04.2025.
Published: 07/31/2025
Abstract. The purpose of the research is to evaluate the efficiency of using Pseudomonas extremorientalis PhS1 bacteria in the production cycle of potato cultivation. Methods. Observations and records of plantings and the quality of the new crop were carried out using standard methods and recommendations for three years. The assessment of the phytopathological state of potato plantings during the growing seasons, as well as the yield, fractional composition, marketability and the infestation of new crop potato tubers by pathogens were studied. At least 100 plants were used per study variant during each record for analysis. The scientific novelty of the research is to establish the possibility and efficiency of using a bacterial strain isolated from the microbial cenosis of earthworm coprolites and having growth-stimulating and antifungal properties, P. extremorientalis PhS1, in the traditional scheme of potato cultivation in Tomsk region. Results. It was established that bacterization of tubers with an experimental strain led to a decrease in the prevalence of a complex of diseases on potato plantings by 2–6 times, depending on the variety and weather conditions of the growing season; the greatest decrease in development was noted for potato pathogens of blackleg (2–10 times) and Alternaria blight (2–5 times). A decrease in the severity index of Alternaria and late blight (14–60 times) of bacterized plants occurred both due to a decrease in the number of plants with signs of diseases, and due to a decrease in the severity of damage to plantings. Bacterization of potatoes contributed to an increase in the biological yield of potatoes by 5–20%, improved the phytosanitary condition of tubers of the new crop, increased the safety of food potatoes and improved the quality of seed material. The experimental data obtained allow us to recommend the inclusion of P. extremorientalis PhS1 bacteria in the traditional scheme of potato cultivation in Tomsk region.
Keywords: Pseudomonas extremorientalis, Solanum tuberosum, Alternaria blight, biological product, analysis of potato tuber infection, phytosanitary monitoring, late blight, blackleg
Acknowledgements. This research was carried out within the framework of the Complex Scientific and Technical Project (CSTP) activity “Development of potato breeding and seed production in the Russian Federation” of the Federal Scientific and Technical Program for the Development of Agriculture for 2017–2025.
For citation: Minaeva O. M., Akimova E. E., Zyubanova T. I., Kravets A. V., Tereshchenko N. N. Efficiency of using antagonist bacteria when cultivating potatoes in Tomsk region. Agrarian Bulletin of the Urals. 2025; 25 (07): 1037‒1047. https://doi.org/10.32417/1997-4868-2025-25-07-1037-1047 (In Russ.)
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