UPTAKE OF MAIN BIOGENIC ELEMENTS BY WINTER RAPE PRODUCTS DEPENDING ON FERTILIZERS AND LIME-STONE MELIORANTS APPLICATION
Influence of fertilizer (N120Р90К120), sulfur-containing fertilizers, foliar fertilization with micronutrients, different doses, and types of limestone ameliorants on the nitrogen, phosphorus, potassium content in the main and by-products of winter rape are given. The aim of the research was to establish the content of nutrients in the seeds and straw of winter rapeseed depending on fertilizers and liming. Research methods: field, agrochemical, statistical. The application of limestone ameliorants on the background of N120P90K120 provided an increase of winter rapeseed yield by 1.08–2.07 t/ha, straw – by 2.09–3.40 t/ha to relatively of control (without fertilizers) and the formation of the ratio seeds: straw at the level of 1.95–2.32 on sod-podzolic soil of Western Polissia. The content of nutrients in seeds of winter rapeseed ranged from 3,17 to 3,56% of nitrogen, 0,85–0,95 % of phosphorus, 1,09–1.17 % of potassium; in straw – 1.05–1.24 % of nitrogen, 0.22–0.35 % of phosphorus, 1.39–1.52 % of potassium depending on the fertilizing and doses of limestone application. The most effectiveness variant was the use a 1.0 dose of dolomite flour (by hydrolytic acid) in combination with N120P90K90, sulfur and microfertilizer Nutrivant Plus Cereals (2 kg/ha). The total uptake of nutrients by winter rapeseed products mainly depended on fertilizers and doses of liming too. The maximum total uptake of elements was obtained in variants of using 1.0 dose of dolomite flour with addition S40 and microfertilizer Nutrivant Plus and 1.5 dose on the background of N120P90K120: nitrogen 156.7 and 163.9 kg/ha, phosphorus 42.8 and 40.3 kg/ha, potassium 106.1 and 110.9 kg/ha. The highest normative nutrients removal by a 1 ton of seeds and the appropriate amount of by-products (59,1 kg of nitrogen, 16.1 of phosphorus and 40.1 kg of potassium) were observed by the applying 1,0 dose of dolomite flour with S40 and microfertilizer on the background of mineral fertilizer (N120Р90K120).
3. Hospodarenko, H. M. (2002). Osnovy intehrovanoho zastosuvannia dobryv. [Fundamentals of integrated application of fer-tilizers]. Nichlava, Kyiv (in Ukrainian).
4. Hospodarenko, H. M. (2010). Ahrokhimiia [Agrichemistry]. NNTs «IAE», Kyiv (in Ukrainian).
5. Likhochvor, V. V (2002) Ripak yarui ta ozymyi [Rapeseed spring and winter]. Lviv: Ukrainski tekhnologii (in Ukrainian). 6. Madaras, M., Mayerová, M., Kumhálová, J., & Lipavský, J. (2017) The influence of mineral fertilisers, farmyard manure, liming and sowing rate on winter wheat grain yields. Plant Soil Environ., 64, 38–46. doi: 10.17221/703/2017-PSE
7. Polovyi, V. M. (2007). Optymizatsiia system udobrennia u suchasnomu zemlerobstvi: monohrafiia [Optimization of fertiliza-tion systems in modern agriculture: monograph]. Volynski Obereh, Rivne (in Ukrainian).
8. Polovyi, V. M. (2011). Vidtvorennia rodiuchosti ahrokhimichno dehradovanykh gruntiv [Reproduction of agrochemical degraded soils fertility]. Bulletin of Agricultural Science, 2, 37–40 (in Ukrainian).
9. Salatenko, V. N. (Ed). (2008) Ozymyi ripak [Winter rape]. Oliini kultury v Ukraini [Oil crops in Ukraine]. Osnova, Kyiv, 318–324 (in Ukrainian).
10. Shpaar, D. (2012) Raps i surepica: vyrashchivanie, uborka, hranenie i ispolzovanie [Rapeseed and rape: cultivation, har-vesting, storage and using]. Zerno, Kyiv (in Russian). 11. Volkohon, V. V., Berdnikov, O. M., & Lopushniak V. I. (2019) Ekolohichni aspekty systemy udobrennia silskohocpo-darskykh kultur [Ekological aspects of the system of crops fertilization]. Kyiv: Ahrarna nauka (in Ukrainian).
12. Zaryshniak, A. S. (Ed.) (2015) Optymizatsiia udobrennia ta rodiuchosti gruntu u sivozminakh [Optimization of fertilizers and soil fertility in crop rotations]. Ahrarna nauka, Kyiv (in Ukrainian).