Uman National University | today: 12/25/2025
| Author(s) |
Poltoretskiy S.P., Candidate of Agricultural Science, professor, Uman National University of Horticulture, Ukraine Щербина А. В., , , |
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| Category | The Agronomy | ||
| year | 2025 | issue | Issue 107 part 1 |
| pages | 566-573 | index UDK | 633.631.813:631.582 | DOI | 10.32782/2415-8240-2025-107-1-566-573 (Link) |
| Abstract | Purpose. To study the impact of sowing dates and fertilization on millet yield, removal and nutrient balance. Methods. Field to determine the influence of sowing dates and fertilization on millet yield; measuring and weighing – to determine yield, analytical – to determine the content of nutrients in crop components, calculation – to determine the removal and balance of nutrients, mathematical and statistical – to process experimental data. Results. The research data on the influence of doses and methods of nitrogen fertilizer application on millet yield and the formation of the balance of nutrients in the soil are presented. It was found that three-time application of nitrogen fertilizers formed the highest yield of millet grain with a slight deficiency of potassium in the soil. Sowing dates had an insignificant effect on millet yield and indicators of the balance of nutrients. Conclusions. When sowing millet in the second decade of April and three-time nitrogen fertilization with a total dose of N80 against the background of the application of P30K30, the highest grain and straw yields were achieved – 4.40 and 5.82 t/ha, respectively, exceeding the control without fertilizers – by 1.29 and 1.65 t/ha. When sowing millet in the third decade of April, the grain yield decreased by 0.44 t/ha. The application of N30Р30K30 + N30 + N20 and sowing millet in the second decade of April caused the greatest removal of nutrients with a marketable yield: nitrogen – 71 kg/ha, phosphorus – 27 kg/ha, potassium – 38 kg/ha. When sowing millet in the third decade of April, the removal of nutrients in the grain composition decreased by 9–12%, which was caused by a decrease in biological yield. During both sowing periods, the application of mineral fertilizers at a dose of N30Р30K30 + N30 + N20 formed solid foundations for growing millet. The specified dose of fertilizers formed a positive balance of nitrogen and phosphorus in the soil in the amount of 9–17 and 3–6 kg/ha and a slight deficiency of potassium in the amount of 5–8 kg/ha. | ||
| Key words | fertilizers, yield, nitrogen, phosphorus, potassium, removal, balance | ||