Agriculture and forestry

Polishchuk Mihaylo  – сandidate of Agricultural Sciences, Associate Professor, the chief of Agriculture, Soil Science and Agrochemistry chair of Vinnytsia National Agrarian University (21008, Vinnytsya, 3, Sonychna St., e-mail: polishchuk.mikhaylo@ukr.net).

In order to maximize the potential of productivity of spring barley varieties, it is important to optimize the conditions for plant growth and development, which are, first of all, provided by the latest intensive agricultural technologies, which provide for the correct placement of crops in crop rotation after the respective precursors; optimal supply of plants with nutrients, taking into account their content in the soil; fractional application of nitrogen fertilizers during the growing season by phases of growth  and  stages  of organogenesis; the use of retardants, integrated protection of plants against weeds, pests, diseases, timely and quality implementation of all agrotechnical measures. Research to study the effectiveness of different terms of spring barley sowing and doses of nitrogen fertilizers were conducted during 2018 - 2019 in the conditions of the research field of VSAU v. Agronomichne of Vinnytsia region on gray ashed soils. Weather conditions during the years of the research differed from the average long-term data with high temperature conditions and low rainfall, and accordingly the most favorable year for the growth and development of spring barley was 2018. It is shown the 2-years investigation results on study the effect of sowing dates and nitrogen fertilizations on productivity elements and quality indexes of spring barley grain under conditions of Right-Bank Forest-Steppe on gray forest soils. Accordingly, the highest levels of harvest of barley cultivars at different sowing dates were obtained under conditions of 2018. t should also be noted that the delay of sowing by 6 days in the years of research leads to a decrease in the yield level on average for all varieties by 0,42 – 0,64 t / ha, and a delay of 14 days leads to a decrease by 1,37 – 1,80 t / ha. The use of nitrogen fertilizers leads to an increase in the yield level of both cultivated varieties, and the highest crop yields of the Svarog variety were obtained in the experiment where the background + N60 was applied in the foliar fertilization (4,87 t / ha), and the lowest respectively in the control variant 3,16 t /ha, in the Armax variety a similar situation is observed, however, with lower indicators respectively 4,54 and 3,06 t / ha. The lowest values of protein content in the grain were obtained in the control variant where only N17 P17 K17 was applied to rows when sowing, and the use of nitrogen fertilization leads to an increase in this indicator and the highest values obtained in the variant of experiment 4, where Background (N17 P17 K17) + N60 in the foliar fertilization on the feeding phase of the tube exit.

1.Avramenko S.V., Tsekhmeistruk M.H., Krasylovets Yu H., Riabchun N.I. (2013). Zakhyst posiviv yachmeniu vid burianiv [The protection of barley crops from weeds]. Propozytsiia – Offer. №5.  92–94. [in Ukrainian].

2.Avramenko S.V., Manko K.M., Usov O.S., Kurylov O.S., Bobrov O.Yu. (2016). Elementy udobrennia yachmeniu yaroho[The fertilization elements of spring barley]. Propozytsiia – The Offer. № 3. 82–83. [in Ukrainian].

3.Berdin S. I., Tkachenko A. N. (2013). Formuvannia struktury produktyvnosti posiviv yachmeniu yaroho v umovakh pivnichno-skhidnoho Lisostepu Ukrainy[The productivity structure formation of spring barley crops under conditions of North-East Forest-Steppe in Ukraine]. Visnyk Sumskoho natsionalnoho ahrarnoho universytetu «Ahronomiia i biolohiia» – Bulletin of Sumy National Agrarian University "Agronomy and Biology". Issue 11. 152–155. [in Ukrainian].

4.Vyslobodska M., Danyliuk V., Bidna L., Vurdyk P. (2013). Formuvannia urozhainosti ta yakosti zerna yaroho yachmeniu zalezhno vid rivnia mineralnoho zhyvlennia [The yield and quality grain formation of spring barley depending the mineral fertilization level. Journal of Lviv National Agrarian University]. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu «Ahronomiia» – Bulletin of the Lviv National Agrarian University Agronomy Series.  № 17 (1). 166-170. [in Ukrainian].

5.Dospekhov B. A. (1985). Metodyka polevoho opyta (s osnovamy statystycheskoi obrabotky rezultatov yssledovanyi). 5-e yzd., dop. y pererab [Field experiment technique (with the basics of statistic processing of the research results). 5th ed., supplemented and improved] [in Russian]. 

6.Demydov O. A., Hudzenko V. M., Kochmarskyi V. S. ta in. (2018). Elementy tekhnolohii vyroshchuvannia nasinnia sortiv yachmeniu yaroho Myronivskoi selektsii u Lisostepu Ukrainy. Мetodychni rekomendatsii – Guidelines. [Elements of growing technology of spring barley seeds by Mironovsky breeding in the Forest-steppe of Ukraine]. Myronivka. [in Ukrainian].

7.Kalenska S.M. (2015). Systemy suchasnykh intensyvnykh tekhnolohii u roslynnytstvi: Pidruchnyk [System of modern intensive technologies in vegetation: Textbook]. S.M. Kalenska, L.M. Yermakova, V.D. Palamarchuk, I.S. Polishchuk, M.I. Polishchuk.  Vinnytsia.  [in Ukrainian].

8.Naukovo-praktychni rekomendatsii z vyroshchuvannia silskohospodarskykh kultur v 2015 rotsi (2015). [Scientific and practical recommendations for crop cultivation in 2015]. Osvoiennia innovatsiino-tekhnolohichnoho kompleksu vesniano- polovykh robit v Stepovii zoni. Dnipropetrovsk.  [in Ukrainian].

9.Polishchuk M.I. (2019). Produktyvnist yachmeniu yaroho zalezhno vid pozakorenevykh pidzhyvlen v umovakh Lisostepu Pravoberezhnoho [The productivity of spring barley depending the foliar fertilization under conditions of Right-Bank Forest-Steppe]. Zbirnyk naukovykh prats VNAU «Silske hospodarstvo ta lisivnytstvo» – Collection of scientific works. Agriculture and Forestry.  № 13.  94-104. [in Ukrainian].

10.Polishchuk M.I. (2017). Formuvannia produktyvnosti yachmeniu yaroho zalezhno vid zastosuvannia rehuliatoriv rostu roslyn v umovakh Lisostepu pravoberezhnoho [Formation of spring barley productivity depending on the application of plant growth regulators in the conditions of the Forest-Steppe Right Bank]. Zbirnyk naukovykh prats VNAU «Silske hospodarstvo ta lisivnytstvo» – Collection of scientific works. Agriculture and Forestry. № 7. Vols. 1.  59-69. [in Ukrainian].

11.Iankovskyi N.H. (2002). Stoyt ly seiat yachmen ochen rano? [Should barley be sown very early?]. Zemledelye –  Agriculture. № 1. 28. [in Russian].