The research was carried out in 2021–2023 on the experimental field of Northern Trans-Ural State Agricultural University in the northern forest-steppe of Tyumen region. The purpose of the research was to study the reaction of potato varieties to biologies when grown for seeds in this condition. Three registered varieties of domestic breeding Karmen, Lux and Bravo were taken as the object of study. Also, the effect of four biologies was studied: Biodux, Plantarel, Epin-Extra, Zerebra Agro. The growing season of potato varieties has been reduced with the use of biologies Biodux and Epin-Extra. In Karmen and Lux varieties, it was 62 days (control of 66 and 65 days), in Bravo variety ‒ 70 days (in control version of 75 days). Resistance to late blight and viral diseases was high (7 points), to alternariasis and rhizoctoniosis was very high (9 points). The mass of seed tubers was at a fairly high level and amounted to 248–360 g. The seed yield was 11,1–16,2 t/ha. The yield losses of tubers in control variant amounted to 12,1–14,0%, with the use of biologies ‒ 8,8–10,4%. In Karmen variety, the yield was more dependent on the sprout number and their raw weight (correlation coefficients are 0.532 and 0.530, respectively); an average positive relationship was established. In Lux variety, the yield of seed tubers was determined by the leaf area (correlation coefficients is 0,586); the average relationship was positive. The yield of Bravo variety was more closely related to the leaf area and sprout number (correlation coefficients are 0.930 and 0.856, respectively); a strong positive relationship has been established. The profitability of production was 141–266%, depending on the variety.

Gaizatulin Andrey S., Loginov Yury P.

1. Zavalin A. A., Almetov N. S., Martyanov M. I. Effect of fertilizers and biopreparations on yield and quality of potato tubers. Agrohimiya, 2000;4:63–67. EDN TEGYLF (in Russ.).
2. Kazak A. A., Loginov Yu. P., Gayzatulin A. S. The role of the variety in improving the yield and quality of potato tubers. Proceedings from Promising developments and breakthrough technologies in agriculture: Natsional'naya nauchno-prakticheskaya konferentsiya. (PP. 117–123), Tyumen', Gosudarstvennyy agrarnyy universitet Severnogo Zaural'ya, 2020 EDN OAAEFH (in Russ.).
3. Kazak A. A., Loginov Yu. P., Gayzatulin A. S., Zhigadlo V. V. Formation of yield and quality of tubers of potato varieties depending on harvesting time in northern forest-steppe of Tyumen region. Izvestiya Kabardino-Balkarskogo nauchnogo centra RAN, 2021;6(104):117–125. https://doi.org/10.35330/1991-6639-2021-6-104-117-125. EDN VHZZBA (in Russ.).
4. Anisimov B. V., Simakov E. A., Zhevora S. V., Oves E. V., Zebrin S. N., Mityushkin A. V. [et al.]. Diagnosis and prevention of viral, bacterial and fungal diseases controlled in potato seed production: methodological recommendations, Vladikavkaz, Izdatel'stvo IR, 2021, 62 p. EDN SOEEYA (in Russ.).
5. Gayzatulin A. S., Kazak A. A., Loginov Yu. P. Dynamics of the formation of yields of early ripe potato varieties in the northern forest-steppe of the Tyumen region. Vestnik Michurinskogo gosudarstvennogo agrarnogo universiteta, 2021;4(67): 94-99. EDN IYNWCA (in Russ.).
6. Dobrokhotov S. A., Anisimov A. I., Urvantseva A. V. Effect of some biopreparations on disease development and potato yields. Zashchita kartofelya, 2018;1:15–22. EDN ZCXLTN (in Russ.).
7. Khanieva I. M., Magomedov K. G., Boziev A. L., Abidova G. Kh., Abidov A. Kh. Influence of biopreparation application on yield and quality indicators of potatoes in the conditions of the mountain zone of Kabardino-Balkar Republic. Proceedings from Promising innovative projects of young scientists: X Vserossiiskaya konferentsiya. (PP. 164–174), Nal'chik, Print Tsentr, 2023 EDN TAABZN (in Russ.).
8. Komyakova E. M., Nesterova L. B. Effect of biopreparations on yield and starchiness of potato tubers. Vestnik Altajskogo gosudarstvennogo agrarnogo universiteta, 2003;2(10):73–74. EDN PELVMV (in Russ.).
9. Mezyukha A. N., Kazak A. A., Sherstobitov S. V. Potato fertilizer system. Proceedings from Youth science for the development of agriculture: Molodezhnaya nauka dlya razvitiya APK: LX Studencheskaya nauchno-prakticheskaya konferentsiya. (PP. 78–83), Tyumen', Gosudarstvennyy agrarnyy universitet Severnogo Zaural'ya, 2023. EDN MFANSS (in Russ.).
10. Osipova V. V. Influence of potato processing by phytosporin-m biological product on maturity, crop and quality of tuber under conditions of cryolitzone. Vestnik Irkutskoi gosudarstvennoi sel'skokhozyaistvennoi akademii, 2020;97:50–55. EDN NRHXND (in Russ.).
11. Plekhanova L. P., Buldakov S. A. Effectiveness of action of biological preparation and fungicidal agents against plant diseases, potatoes tuber and their influence on productivity of land. Mezhdunarodnyy nauchno-issledovatel'skiy zhurnal, 2019;9–2(87):28–33. https://doi.org/10.23670/IRJ.2019.87.9.031. EDN TCNUNZ (in Russ.).
12. Sokolova M. G., Akimova G. P., Boyko A. V., Nechaeva L. V., Glyan'ko A. K., Vayshlya O. B. [et al]. Effect of bacterial biopreparations on potato yield and its quality. Agrokhimiya, 2008;6:62–67. EDN IPKSSP (in Russ.).
13. Uromova I. P., Kozlov A. V. Effect of biopreparations on productivity and quality of potatoes. Mezhdunarodnyy zhurnal prikladnykh i fundamental'nykh issledovaniy, 2020;5:77–81. EDN HTOGWX (in Russ.).
14. Polishchuk V. A. The influence of microfertilizers and biological preparation on the formation of potato tubers of different fractions. Put' nauki, 2015;9(19):45–49. EDN UJFEFL (in Russ.).
15. Cheremisin A. I., Kumpan V. N. Study the impact of biopreparations and growth stimulators application on useful microflora and productivity of potato. Vestnik Kazanskogo gosudarstvennogo agrarnogo universiteta, 2018;13;4(51):91–95. https://doi.org/10.12737/article_5c3de390ad4cc9.66646319. EDN YWHBVR (in Russ.).
16. Alikov A. A., Basieva A. S., Bekmurzov B. V. Influence of biopreparations on potato varieties in the mountain zone of Republic of North Ossetia – Alania. Vestnik nauchnykh trudov molodykh uchenykh, aspirantov i magistrantov Gorskogo gosudarstvennogo agrarnogo universiteta. (PP. 77–81), Vladikavkaz, Gorskiy gosudarstvennyy agrarnyy universitet, 2021. EDN ALWTUY (in Russ.).
17. Anisimov B. V., Marzoev Z. A., Zebrin S. N., Blinkov E. G., Gracheva I. A. Prevention for viral diseases, managed in seed potato growing. Zashchita i karantin rastenij, 2022;9:27–31. https://doi.org/10.47528/1026-8634_2022_9_27. EDN UUVZKG (in Russ.).
18. Loginov Yu. P., Gayzatulin A. S. The influence of mineral fertilizers on the yield and quality of seed tubers of potatoes in the northern forest-steppe of the Tyumen region. Mir innovatsiy, 2021;1:7–14. EDN TVGSCE (in Russ.).
19. Rakitina U. A., Yashchenko S. N., Kazak A. A. Yield and quality of spring soft whet biotypes Tyumenskaya yubileynaya in the foreststeppe zone of the Tyumen oblast. Proceedings from Strategic resources of the Tyumen agro-industrial complex: people, science, technology: LVIII Mezhdunarodnaya nauchno-prakticheskaya konferentsiya. (PP. 232–244), Tyumen', Gosudarstvennyy agrarnyy universitet Severnogo Zaural'ya, 2024. EDN SVXQCM (in Russ.).
20. Simakov E. A., Anisimov B. V., Zebrin S. N., Mityushkin A. V., Zhuravlev A. A., Derevyagina M. K. [et al.]. Evaluation of varietal difference features and symptoms of diseases controlled in potato seed production. Kartofel' i ovoshchi, 2022;8:20–23. https://doi.org/10.25630/PAV.2022.20.98.003. EDN ZEQDMC (in Russ.).