The agronomic and energy efficiency of using calculated doses of mineral fertilizers in the cultivation of spring wheat in the forest-steppe of Western Siberia has been assessed. The experiments were carried out on meadow-chernozem soil in 2023-2024 on the durum wheat varieties Omskiy Izumrud and Rusticano, and soft wheat varieties Silantiy and Niva 55. The calculated doses of fertilizers (for a planned increase of 0.6 and a yield of 3.0 t/ha) were applied in the spring before sowing. The use of calculated doses had a positive effect on yield: for the Silantiy variety, the increase, depending on the dose, was 0.44-0.76 t/ha (20.1-6.7% of the control), for Niva 55 0.43-0.91 t/ha (20.3-61.2%), for Omskiy Izumrud 0.44-0.76 t/ha (20.1-66.7%), Rusticano 0.43-0.91 t/ha (20.3-61.2%). When calculating the yield increase (dose N35P70) of 0.60 t/ha, an increase in yield was formed: 0.46 t/ha for the Silantiy variety, 0.49 t/ha for the Niva 55 variety, 0.50 t/ha for the Omskiy Izumrud variety and 0.52 t/ha for the Rusticano variety, which is 76.7-86.7% of the planned. Using the method of calculating the planned yield (the average dose of N65P81), 2.36; 2.53; 2.38 and 2.35 t/ha were obtained, respectively, or 78.3-84.3% of the estimated 3.0 t/ha. The highest agronomic efficiency was achieved in the N65P81 variant: Rusticano - 4.86 kg/kg, Omskiy Izumrud - 4.86 kg, Niva 55 - 4.66 kg and Silantiy - 4.45 kg/kg. The application of calculated doses of fertilizers was energetically efficient when cultivating all varieties, the bio efficiency was always more than one: when cultivating the Sylantiy variety, it was 1.59 (calculated for a planned increase) and 1.35 (for a planned yield); Niva 55 - 1.67 and 1.40; Omskiy Izumrud - 1.71 and 1.47; Rusticano - 1.77 and 1.47, respectively. At the same time, the greatest efficiency was achieved when applying the calculation method for a planned increase in yield.
spring wheat, calculated dose, fertilizer, grade, efficiency
1. Bobrenko I.A. Agronomicheskaya, ekonomicheskaya i energeticheskaya effektivnost' primeneniya udobreniy: metod. rekomendacii // Omsk: Izd-vo FGBOU VO Omskiy GAU. 2022. 24 s. EDN: https://elibrary.ru/DIBLOF
2. Primenenie mineral'nyh udobreniy pod yarovuyu pshenicu pri resursosberegayuschey tehnologii vozdelyvaniya na obyknovennom chernozeme / E.P. Boldysheva, V.A. Chudinov, V.I. Popova [i dr.] // Vestnik Omskogo gosudarstvennogo agrarnogo universiteta.2020. № 2 (38). S. 41-51. EDN: https://elibrary.ru/ZZUEKO
3. Reakciya sortov yarovoy tverdoy pshenicy na udobreniya i normy vyseva pri vozdelyvanii po tehnologii No-till v stepnoy zone Altayskogo kraya / M.A. Rozova, A.I. Ziborov, V.I. Usenko [i dr.] // Dostizheniya nauki i tehniki APK. 2019. № 10. S. 34-39. EDN: https://elibrary.ru/ENMOVY
4. Effektivnost' azotnogo udobreniya zernovyh kul'tur razlichnyh sortov / S.A. Shafran, A.S. Hachidze, M.G. Mamedov [i dr.] // Agrohimiya. 2006. № 7. S. 13-19. EDN: https://elibrary.ru/HUGDDF
5. Urozhaynost' i kachestvo zerna sortov yarovoy myagkoy pshenicy pri primenenii nekornevyh podkormok po razlichnym predshestvennikam / I.A. Bobrenko, V.M. Krasnickiy, V.P. Kormin [i dr.] // Plodorodie. 2024. № 2. S. 27-30. EDN: https://elibrary.ru/LNLUQG
6. Rahimov A.D., Mirahmedov F.Sh., Komoldinova D.T. Vliyanie mineral'nyh udobreniy na sorta zernovyh kul'tur // Sovremennye tendencii razvitiya nauki i tehnologii. 2016. № 10(4). S. 39-41. EDN: https://elibrary.ru/XAFTRP
7. Effektivnost' azotnyh udobreniy na raznyh sortah pshenicy v predgornoy zone Kryma / A.V. Il'in, E.V. Gorbunova, R.V. Gorbunov [i dr.] // Izvestiya sel'skohozyaystvennoy nauki Tavridy. 2022. № 32(195). S. 59-65. EDN: https://elibrary.ru/DVBMSC
8. Urozhaynost' i kachestvo yarovoy tverdoy pshenicy Rustikano pri primenenii podkormok udobreniyami i regulyatorom rosta / I.A. Bobrenko, V.P. Kormin, A.V. Shtyben // Izvestiya Orenburgskogo agrarnogo universiteta. 2024. № 2. S. 14-18. EDN: https://elibrary.ru/BYMPFE
9. Ivanova M.V. Effektivnost' nekornevyh azotnyh podkormok sortov yarovoy pshenicy v yuzhnoy lesostepi Zapadnoy Sibiri: dis.. kand. s.-h. nauk. Omsk, 2024. 145 s. EDN: https://elibrary.ru/MDRXNF
10. Popova V.I., Boldysheva E.P. Bioenergeticheskaya effektivnost' primeneniya udobreniy pod ozimye zernovye kul'tury v Zapadnoy Sibiri // Vestnik Altayskogo GAU. 2011. № 10. S. 10-15. EDN: https://elibrary.ru/OHIYTR
