The article presents the results of assessing the grain productivity of corn hybrids in the Amur region. The research was based on the growing demand for corn grain in the domestic and foreign markets. The research was carried out in 2018 - 2019 on the experimental field of the Federal State Budgetary Educational Institution of Higher Education “Far Eastern State Agrarian University”. The soil is meadow chernozemic. The hydrothermal coefficient in 2017 was 2.8, and in 2018 - 3.3. The material for the research was 15 corn hybrids, including 4 domestic ones. The accounting area of the plot is 20 m2. The variants are repeated three times. On average, over the years of research, the duration of the growing season for early ripening corn hybrids was 99-105 days, and for mid-early ones, 105 - 128 days. The early ripening group of hybrids is 14.8 cm lower than the middle-early one in height. The highest grain yield in the early ripening group was provided by the hybrids Vulkan, Dolphin, Mateus and Coryphaeus, the increase reached 2.1 t / ha, 2.0, 1.8 and 1.7 t / ha in comparison with the control Ladoga 181 MV. The hybrids of the early ripening group of Vulkan, Limagrain 30179, Clifton, Coryphaeus, Dolphin, Mateus and PR39G12 (Pioneer) significantly exceed the standard of Ladoga 181 MV by 19.8%, 13.2, 7.5, 16.0, 18.9, 16.9 and 10, 4% by grain yield. In terms of grain yield, the hybrid Irondel from the middle-early group was marked out, which exceeded the control hybrid Mashuk by 28.7%. In terms of grain yield the hybrids of the middle-early group Delitop (Syngenta) and Irondel significantly exceed the control by 12.9% and 28.7% - Mashuk. The hybrid Falcon (Syngenta) was the same as the control in productivity.

Akhalbedashvili D. V.

1. Akhalbedashvili, D. V. Sposoby poseva formiruyushchie vysokoproduktivnye agrotsenozy gibridov kukuruzy (Zea mays L.) na zerno v usloviyakh Priamur’ya, (Sowing methods forming highly productive agrocenoses of corn hybrids (Zea mais L.) for grain in the Amur region), Kormoproizvodstvo, 2017, No 1, P. 54, ISBN 978-5-9642-0396-4.
2. Akhalbedashvili, D. V. Vliyanie biologicheskogo preparata EM-Bio na rost, razvitie i produktivnost’ kukuruzy (Influence of the biological preparation EM-Bio on the growth, development and productivity of corn), Agropromyshlennyi kompleks: problemy i perspektivy razvitiya, mater. vseros. nauch.-prakt. konf. (Blagoveshchensk, 17 apr. 2019 g.), V 2 ch. Ch.1, Blagoveshchensk, Izd-vo Dal’nevostochnogo gos. agrarnogo un-ta, 2019, P. 28.
3. Babkov, M. A. Neotlozhnaya zadacha kukuruzovodov (An urgent task for corn growers), Kukuruza i sorgo, 1988, No 3, PP. 2-5, ISSN: 1996–4377.
4. Gridnev, N. I. Bezgerbitsidnaya tekhnologiya vyrashchivaniya kukuruzy (Herbicide-free corn cultivation technology), Zashchita rastenii, 1990, No 6, PP. 19–20.
5. Dospekhov, B. A. Metodika polevogo opyta (s osnovami statisticheskoi obrabotki rezul’tatov issledovanii) (Field experiment technique (with the basics of statistical processing of research results), 5-e izd., dop. i pererab., Moskva, Agropromizdat, 1985, 351 p, il.
6. Epifantsev, V. V., Akhalbedashvili, D.V. Optimal’nyi sposob poseva novykh gibridov kukuruzy dlya formirovaniya maksimal’noi urozhainosti zerna v usloviyakh Priamur’ya (The optimal way of sowing new corn hybrids for the formation of maximum grain yield in the Amur region), Rossiiskaya nauka v sovremennom mire: sbornik statei VIII mezhdunar. nauch.-prakt. konf. (Moskva, 30 dekabrya 2017 g.), Ch.1, Moskva, NITs «Aktual’nost’ RF», 2017, PP. 6–7.
7. Epifantsev, V.V., Akhalbedashvili, D.V. Adaptivnaya tekhnologiya vozdelyvaniya kukuruzy na zerno v usloviyakh Amurskoi oblasti (Adaptive technology for the cultivation of corn for grain in the conditions of the Amur region), Agropromyshlennyi kompleks: Problemy i perspektivy razvitiya, mater. vseros. nauch.-prakt. konf. (Blagoveshchensk, 11 aprelya 2018), V 2 ch. Ch.1, Blagoveshchensk, Izd-vo Dal’nevostochnogo gos. agrarnogo un-ta, 2018, PP. 76–80.
8. Zemledelie (Agriculture), G.I. Bazdyrev, V.G. Loshakov, A.I. Puponin [i dr.], pod red. A.I. Puponina, Moskva, KolosS, 2002, 552 p.
9. Zemledelie: praktikum (Agriculture: workshop), I.P. Vasil’ev, A.M. Tulikov, G.I. Bazdyrev [i dr.], Moskva, INFRA-M, 2013, 424 p.
10. Metodika Gosudarstvennogo sortoispytaniya sel’skokhozyaistvennykh kul’tur (zernovye, krupyanye, zernobobovye, kukuruza i kormovye kul’tury) (Methodology of the State variety testing of agricultural crops (cereals, legumes, corn and fodder crops)), Iss. 2, Moskva [b. i.],
    1989, 194 p.
11. Programma uskorennogo razvitiya regiona do 2024 g. (The program for the accelerated development of the region until 2024), URL: https://www.amurobl.ru/posts/news/v-priamure-razrabotana-programma-uskorennogo-razvitiya (accessed data 09.11.2020).
12. Sistema zemledeliya Amurskoi oblasti: proizvodstvenno-prakticheskii spravochnik (The farming system of the Amur region: production and practical reference book), pod obshch. red. d-ra s.-kh. nauk, prof. P.V. Tikhonchuka, Blagoveshchensk, Blagoveshchensk, izd-vo Dal’nevostochnogo GAU, 2016, 431 p.
13. Federal’naya nauchno-tekhnicheskaya programma razvitiya APK do 2025 goda (Federal scientific and technical program for the development of the agro-industrial complex until 2025), URL: http://government.ru/docs/29004/ (accessed data 09.11. 2020).
14. Bumbar, I. V., Epifantsev, V. V., Shchegorets, O. V., Sinegovskaya, V. T., Kuznetsov, E. E., Kuvshinov, A. A., Kapustina, I. A. Optimization of agrotechnical terms of harvesting of crops, design and operating parameters of crop-harvesting machines under conditions of the Amur region, Russian Federation, Federation Plant Archives Journal (ISSN: 0972-5210), 2018, Vol. 18(No 2), PP. 2567–2572.