Visnyk LNAU: Agronomy 2021 №25: 158-161
PRODUCTIVITY OF WINTER WHEAT DEPENDING ON THE CALCULATED NORMS OF FERTILIZERS FOR THE PROGRAMMED YIELD IN THE WESTERN FOREST-STEPPE
Parkhuts B., Candidate of Agricultural Sciences
ORCID ID: 0000-0001-9874-1744
Lviv National Agrarian University
https://doi.org/10.31734/agronomy2021.01.158
Annotation
The research presents results of studying the influence of the level of mineral fertilizers for the programmed yield of 55, 60 and 65 c/ha of winter wheat of Kubus variety on dark gray podzolic soils in the Western Forest-Steppe of Ukraine. The content of mobile forms of nitrogen, phosphorus and potassium in dark gray podzolic soil is as follows: lightly hydrolyzed nitrogen according to Tiurin-Kononova 8.8 mg, mobile phosphorus 10.2 mg and exchangeable potassium according to Chirikov 11.3 mg per 100 g of soil. The following options were included in the scheme of the experiment: control ‒ without fertilizers; recommended norm for this zone N120P90K90 (1.00 : 0.75 : 0.75); the calculated norm of fertilizers N121.0P74.7K91.7 (1.00 : 0.62 : 0.76) for the programmed yield of 55 c/ha; calculated norm of fertilizers N141.0P88.5K108.8 (1.00 : 0.63 : 0.77) for the programmed yield of 60 c/ha; the calculated norm of fertilizers N161.0P102.2K126.0 (1.00 : 0.63 : 0.78) for the programmed yield of 65 c/ha.
The following coefficients were used for calculations: coefficient of nutrients utilization from soil ‒ N‒30, P2О5 ‒ 10, K2О ‒ 20; nutrients utilization coefficient from mineral fertilizers ‒ N ‒ 80, P2О5 ‒ 40, K2О ‒ 70.
The highest yield of 63.4 c/ha with a programmed yield of 65 c/ha, on average over the years of research, was obtained by applying the calculated mineral fertilizers in the norm of N161.0P102.2K126.0. The increase of yield in this variant was 28.6 c/ha, or 82.2 %, and to the recommended norm N120P90K90 ‒ 13.0 c/ha. The recommended norm N120P90K90 provided a yield of 50.4 c/ha, which gave an increase in yield to control 15.6 c/ha, or 44.8 %. The lowest yield of winter wheat ‒ 34.8 c/ha ‒ was in the control variant of the experiment ‒ without fertilizers.
The highest protein content of 11.6 % and its total yield of 7.35 c/ha was obtained by making the calculated norm in the variant of N161,0P102,2K126,0 for the programmed yield of 65 c/ha. In other variants, the protein content was slightly lower, and in the control it was the lowest and was 10.6 % with a total yield of 3.69 c/ha.
By introducing the calculated norm of N161,0P102,2K126,0, the highest net profit of 19040 UAH/ha and the level of profitability of 100.2 % was achieved.
Key words
winter wheat, fertilizers, yield, quality
Full text
Link
- Dospekhov B. A. Field experience method (with the basics of statistical processing of the research results). 5th ed., ext. and rewritten. Moscow: Agropromizdat, 1985. 351 p.
- Lopushniak V. I., Shevchuk M. Y., Poliukhovych M. M., Parkhuts B. I., Parkhuts I. M. 555 questions and answers on agrochemistry and agrochemical service: textbook / ed. by V. I. Lopushniak. Lviv: Prostir-M, 2018. 488 p.
- Moroz N. V. Programming of yield and quality of grain crops. Bulletin of National University «Lviv Polytechnic». 2011. № 717: Computer Systems and Nets. P. 105–107.
- Plishko A. Crop programming. Offer. 2009. № 4. P. 38–39.
- Kharchenko O. V. Fundamentals of crop programming: A textbook. Sumy: PTH «University Book», 2003. 296 p.
- Shapoval M. I. Fundamentals of grain yield programming. Scientific Bulletin: Coll. sc. Works. № 55. Ternopil, 2007. P. 180–185.
