Uman National University | today: 06/27/2025
| Author(s) |
Lubych V.V., Candidate of Agricultural Science, Lecturer of Department of Technology of Storage and Processing of Grain, Uman National University of Horticulture, Ukraine Сулима А. С., , , |
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| Category | The Agronomy | ||
| year | 2025 | issue | Issue 106 Part 1 |
| pages | 593-602 | index UDK | 631.559+664.64.016:633.16:631.816.1+581.192 | DOI | 10.32782/2415-8240-2025-106-1-593-602 (Link) |
| Abstract | Objective. To determine the productivity formation of winter barley depending on the application of fertilizers and plant growth regulators. Methods. Field, measuring, computational-comparative, analytical, statistical. Results. The highest yield was obtained with the application of N75 – 7.76 t/ha, which is 22% higher than the control without growth regulators. At the same time, plants did not lodge. Despite slight lodging under N150 application, the yield increased by only 4% compared to the N75 treatment, which is likely due to the genetic yield potential of the cultivar Deviatyi Val under the weather conditions of 2023–2024. In other treatments, yields ranged from 6.32 to 7.68 t/ha, influenced by lower lodging resistance. For instance, in systems with partial phosphorus and potassium return or under nitrogen-potassium and nitrogen-phosphorus fertilization, lodging resistance was rated at 3 points in 2023 and 5 points in 2024. Thus, yields in 2023 were the lowest, while in 2024, yields improved. Over the two-year study, the N75 treatment consistently outperformed others. Improved mineral nutrition conditions significantly increased protein content in the grain. Without growth regulator, protein content rose from 9.9% (no fertilizer) to 11.1% (N75) and 12.8% (N150). Conclusions. The effectiveness of fertilizer application for winter barley varies depending on the weather conditions of the research year and the lodging resistance of the plants. The highest plant resistance and grain yield were achieved with the application of N75, yielding 7.20–8.32 t/ha depending on the year. Winter barley shows a strong response to the application of complete mineral fertilizer, which leads to the formation of a large vegetative mass and increases the risk of lodging. Therefore, under such a fertilization scenario, the use of growth regulators is necessary. It was found that the application of growth regulators resulted in an additional grain yield of 0.79–2.41 t/ha, depending on the lodging resistance of the plants. However, the use of growth regulators on non-lodging plants led to a slight decrease in grain yield. The protein content under this cultivation scenario remained unchanged. | ||
| Key words | winter barley, yield, protein content, protein harvest, fertilization system | ||