Uman National University | today: 12/25/2025
| Author(s) |
Трушев І. М., , , Yakovenko R.V., Candidate of Agricultural Science, , Uman National University of Horticulture, Ukraine |
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|---|---|---|---|
| Category | The Agronomy | ||
| year | 2025 | issue | Issue 107 part 1 |
| pages | 46-53 | index UDK | 634.11:631.8 | DOI | 10.32782/2415-8240-2025-107-1-46-53 (Link) |
| Abstract | The article presents the results of a study on the impact of optimized fertilization on the productivity and fruit quality of ‘Champion Arno’ apple trees grafted onto ММ.106 rootstock under the conditions of the Right-Bank Forest-Steppe of Ukraine. It was established that the optimization of mineral nutrition, combined with foliar application of nitrogen and boron, as well as the use of a biostimulant-antistressant, contributed to increased orchard yield, improved biometric characteristics of the fruits, and enhanced their marketability. The obtained results confirm the feasibility of using an integrated fertilization system to ensure stable yields of high-quality fruits, which is essential for the production of competitive fruit products. The research was conducted during 2021–2023 in the experimental apple orchard of Uman National University of Horticulture. The study focused on ‘Champion Arno’ apple trees grafted onto MM.106 rootstock under different fertilization treatments. The research results revealed a significant influence of fertilization systems on the number of fruits produced by ‘Champion Arno’ apple trees. Application of calculated fertilizer rates to the soil increased this indicator by 20% compared to the control. Foliar application of nitrogen and boron in spring and autumn led to a 12% increase in fruit number. The additional use of the biostimulant Wuxal Bio Aminoplant further enhanced fruit set by 5%, confirming the effectiveness of the integrated nutrient management system in yield formation. In 2023, the yield of ‘Champion Arno’ apple trees reached a maximum of 31.9 t/ha, exceeding the 2021 level by 9% and the 2022 level by 55%. The use of an optimized fertilization system resulted in a 4% yield increase compared to the traditional N120P90K90 scheme and a 32% increase compared to the unfertilized control. Foliar applications of nitrogen and boron in spring and autumn raised the yield by 17% and the average fruit weight by 4% compared to untreated plots. The use of a biostimulant-antistressant contributed to improved tree resilience and enhanced market characteristics of the harvest. The proportion of top-grade and first-grade fruits significantly increased under integrated fertilization systems, reaching 80.4% in 2023, which was 6–12% higher than in previous years. | ||
| Key words | apple tree, Champion Arno, soil fertilization, foliar feeding, yield, fruit quality | ||