The article deals with the research of the effects of different doses and timing of nitrogen application on the formation of feed properties of grain (starch and protein content, metabolic energy output and feed units from the grain yield) of the spring triticale.
The starch collection with the grain yield of the Khlibodar Kharkiv variety, compared to the Solovei Kharkiv variety, is characterized by higher rates, respectively, 2.79–3.97 t/ha versus 2.42–3.64 t/ha. The transfer of the norm part of nitrogen fertilizers to nutrition did not contribute to increasing the starch collection compared to the single application of them for presowing cultivation.
On average, over the three years of research, the protein content of spring triticale grain of the Solovei Kharkiv variety for a single nitrogen application amounted to 16.1–17.5 %, for the application of 30–60 kg/ha of primary nutrient in the boot stage – 16.0–16.7 % and N30 in the ear stage only – 16.2–16.8 %. The Khlibodar Kharkiv variety had a slightly higher protein content.
On average, over three years, the metabolic energy content in the grain yield of spring triticale of the Solovei Kharkiv variety was 48.2 GJ/ha in the case of no fertilizer and increased to 58.5–74.6 GJ/ha in the background + N30–150 versions. For the retail application of nitrogen fertilizers, the indicators came short of the single nitrogen application, especially in the background + N0 + N30 (52.6 GJ/ha) version, and the background + N60 + N60 + N30 (67.3 GJ/ha) version came short least of all.
The nitrogen application contributed to the increase in the feed units’ collection per planting acreage unit. On average, over the three years of research with no fertilizer, it was 8.08 t/ha and increased to 9.8–12.5 t/ha, with the single application of N30–150, while the retail nitrogen application markedly decreased and amounted to 8.82–11.29 t/ha.
triticale, feed properties, grain, protein, feed unit, metabolic energy