Uman National University | today: 06/27/2025
| Author(s) |
Hospodarenko G.M., Doctor of Agricultural Sciences, Professor, Uman National University of Horticulture, Ukraine Lubych V.V., Candidate of Agricultural Science, Lecturer of Department of Technology of Storage and Processing of Grain, Uman National University of Horticulture, Ukraine Гавриленко В. С., , , Тригуб О. В., , , Іллічов Ю. Г., , , |
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| Category | The Agronomy | ||
| year | 2025 | issue | Issue 106 Part 1 |
| pages | 455-465 | index UDK | 621.311+338.625.7+ 631.81.036-047.44]:631.816:633.16 | DOI | 10.32782/2415-8240-2025-106-1-455-465 (Link) |
| Abstract | Purpose. To determine the agrochemical, energy, and economic efficiency of fertilizer application for naked spring barley. Methods. Field, calculative, comparative, analytical, and statistical. Results. The highest grain return per 1 kg of active ingredient (a.i.) of mineral fertilizers was obtained with nitrogen-only application, and the lowest with combined phosphorus and potassium application. When applying full mineral fertilizers in various doses and combinations of main nutrients, the return ranged from 5.6 to 7.3 kg of grain per 1 kg a.i. of fertilizers. The most profitable was application of low doses of fertilizers, especially nitrogen ones. Nitrogen fertilizers contributed the most to increasing the profitability level in terms of net income. The highest profit was achieved with prolonged application of N35 – 7,200 UAH/ha. In all experimental variants involving fertilizer application, except for the phosphorus-potassium treatment (P60K70), there was a positive energy return. It should be noted that phosphorus fertilizers, especially at high doses and under low nitrogen input, reduced the energy return the most. Under the full-dose application of mineral fertilizers, the highest energy efficiency coefficient (0.33) was observed in the treatment with N35P30K35. Conclusions. According to the integrated assessment index, the best fertilization system involved N35P30K35. Slightly inferior were the systems with N70K70 and N70P30K35. These treatments not only cover costs from an economic and energy standpoint but also help restore or even improve soil fertility. In all experimental treatments where fertilizers were applied – except for the treatment with phosphorus and potassium only (P60K70) – a positive energy return was recorded. It should be noted that phosphorus fertilizers, particularly at high application rates and when paired with low nitrogen levels, had the most significant negative impact on energy income. Under full mineral fertilization, the highest energy efficiency coefficient was achieved with the application of N35P30K35, yielding a value of 0.33. | ||
| Key words | naked spring barley, fertilizer, agrochemical efficiency, energy efficiency, economic return | ||