Agriculture and forestry

Tsytsiura Yaroslav Grigoryevich − Candidate of Agricultural Sciences (PhD), Associate Professor of the Department of Soil Management, Soil Science and Agrochemistry, Vinnytsia National Agrarian University. (21008, Vinnytsia town, Solnechnaya st., build 5/42, е-mail: yaroslavtsytsyura@ukr.net, 0675854008).

Tomchuk Oleksandr Mykolaiovych – a postgraduate student of the of Soil Management, Soil Science and Agrochemistry, Vinnytsia National Agrarian University (21008, Vinnytsia, Soniachna Str. 3, e-mail: tomchuk.oleksandr@eridon.ua, 0952860640).

The article is devoted to the study of the role of micronutrients in their application in the form of foliar fertilization in view of their influence on the quality indicators of the formed crop, in particular on the oil content of seeds as a basic indicator that determines the value of winter rape as a crop for multipurpose use. The effectiveness of monocomponent application of the main physiologically active microelements in two phenological critical phases of growth and flowering of winter rape plants with different dominance of growth and growth-reproductive processes of plant organism differentiation - in the phenological phases of stemming and flowering - was investigated. The effectiveness of the influence of single-component microelements selected by the typological composition of modern multicomponent chelated microfertilizers in the form of sulfate salts, boric acid and ammonium sulfate at a physiological concentration of 0.2 %, taking into account the regulation of concentrations of physiologically active agrochemicals in the format of foliar feeding with aqueous salt solutions, was determined. It was found that the use of each of the studied microelements was effective and significant in terms of increasing the oil content of seeds in comparison with the control variant of water treatment. Individual peculiarities of seed oil content formation for two high-intensity varieties of winter rape for each of the studied microelements were established both from the standpoint of the increase in oil content to the control and from the standpoint of assessing the variability of its value, taking into account the two-year cycle of study and variation within the general set of the obtained accounting values within the replications of the experiment. On the basis of the data obtained, the expediency of the timing of foliar fertilization with microfertilizers of winter rape hybrids was determined and the role of the genotypic component in the effectiveness of the use of corrective foliar fertilization with various microelements was noted. It was established on the basis of a two-year research cycle for a guaranteed increase of oil content in seeds of intensive winter rape hybrids by at least 0.6-1, 8 % under the condition of one-component use of trace elements in the form of foliar feeding, they should be used in the following order of increasing expediency and validity of Co>Zn>B>Cu>Mn>Mo in the form of a solution of salt sulfates, boric acid and ammonium molybdate at 0.2 % concentration of the working solution for foliar feeding. Prospects for further research in the field of optimization of fertilization of intensive hybrids of winter rape with microfertilizers are formulated.

1.Tokarchuk D.M. (2018). Upravlinski zakhody shchodo pidvyshchennia efektyvnosti vyrobnytstva ripaku [Management measures to improve the efficiency of rapeseed production]. Visnyk sotsialno-ekonomichnykh doslidzhen – Bulletin of Socio-Economic Research. № 1 (65). 125–133 [in Ukrainian].

2.Kaletnik H.M., Oliinichuk S.T., Skoruk O.P. (2012). Alternatyvna enerhetyka Ukrainy: osoblyvosti funktsionuvannia i perspektyvy rozvytku: kolektyvna monohrafiia [Alternative Energy of Ukraine: Peculiarities of Functioning and Development Prospects: A Collective Monograph]. / Za red. H. M. Kaletnika. Vinnytsia: Edelveis i K. [in Ukrainian].

3.Maslak O. (2016). Perspektyvy vyroshchuvannia ta realizatsii ripaku [Prospects for growing and selling rapeseed]. Ahrobiznes sohodni – Agribusiness today. № 13 (332). 58–62 [in Ukrainian].

4.Buchynskyi I. (2011). Efektyvnist vnesennia mikrodobryv na ozymomu ripaku [Efficiency of microfertilizer application on winter rape]. Visnyk Lvivskoho natsionalnoho ahrarnoho universytetu: ahronomiia – Bulletin of Lviv National Agrarian University: Agronomy. № 8. 25–30 [in Ukrainian].

5.Mazur V.A., Matsera O.O. (2019). Analiz zminy yakisnykh pokaznykiv nasinnya ozymoho ripaku zalezhno vid strokiv posivu ta systemy udobrennya [Analysis of changes in the quality of winter rapeseed depending on the timing of sowing and fertilizer system]. Sil's'ke hospodarstvo ta lisivnytstvo – Agriculture and forestry. № 4 (12). 5–17 [in Ukrainian].

6.Shoja T., Majidian M., Rabiee M. (2018). Effects of zinc, boron and sulfur on grain yield, activity of some antioxidant enzymes and fatty acid composition of rapeseed (Brassica napus L.). Acta agriculturae Slovenica. Vol. 111. №1. P. 73–84 [in English].

7.Bybordi A., Mamedov G. (2010). Evaluation of application methods efficiency of zinc and iron for canola (Brassica napus L.). Notulae Scientia Biologicae. Vol. 2. № 1. P. 94–103. [in English].

8.Yasari E., Azadgoleh M.A., Mozafari S., Alashti M.R. (2009). Enhancement of growth and nutrient uptake of rapeseed (Brassica napus L.) by applying mineral nutrients and biofertilizers. Pakistan Journal of Biological Sciences. Vol. 12. Is. 2. P. 127–133 [in English].

9.Xu G., Shen S., Zhang Y., Clements D.R., Yang S., Wen L., Zhang, F., Dong L. (2022). Effects of Various Nitrogen Regimes on the Ability of Rapeseed (Brassica napus L.) to Suppress Littleseed Canarygrass (Phalaris minor Retz.). Agronomy. Vol. 12. 713 p. [in English].

10.Sienkiewicz-Cholewa U., Kieloch R. (2015). Effect of sulphur and micronutrients fertilization on yield and fat content in winter rape seeds (Brassica napus L.). Plant Soil Environment. Vol. 61. № 4. P. 164–170 [in English].

11.Lääniste P., Jŏudu J., Eremeev V. (2004). Oil content of spring oilseed rape seeds according to fertilisation. Agronomy Research. Vol. 2. P. 83–86 [in English].

12.Yang M., Shi L., Xu F.S., Lu J.W., Wang Y.H. (2009). Effects of B, Mo, Zn, and their interactions on seed yield of rapeseed (Brassica napus L.). Pedosphere. Vol. 19. P. 53–59 [in English].

13.Metodychni vkazivky shchodo zastosuvannia mikrodobryv za intensyvnoi tekhnolohii vyroshchuvannia silskohospodarskykh kultur (1987). [Guidelines for the use of micronutrient fertilizers in intensive crop cultivation technology]. K.: Urozhai [in Ukrainian].

14.Saiko V. F. (2011). Osoblyvosti provedennia doslidzhen z khrestotsvitymy oliinymy kulturamy [Features of conducting studies with cruciferous oilseeds] [in Ukrainian].

15.Ushkarenko V.O., Holoborodko S.P., Kokovikhin S.V. (2014). Metodyka polovoho doslidu (zroshuvane zemlerobstvo) [Field experiment methodology (irrigated agriculture)]. Kherson : Hrin D.S. [in Ukrainian].

16. URL: https://meteopost.com/weather/archive/[in Ukrainian].