Uman NUH | today: 10/18/2024
| Author(s) |
Hospodarenko G.M., Doctor of Agricultural Sciences, Professor, Uman National University of Horticulture, Ukraine Cherno O.D., Candidate of Agricultural Science, Associate Professor of Department of Agricultural Chemistry and Soil Science, Uman National University of Horticulture, Ukraine Kravets І.S., Candidate of Agricultural Science, , Uman National University of Horticulture, Ukraine |
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| Category | The Agronomy | ||
| year | 2024 | issue | Issue number 104. Part 1 |
| pages | 149-160 | index UDK | 631.416.1:[631.8] : 631.153 : 631.582 | DOI | 10.32782/2415-8240-2024-104-1-149-160 (Link) |
| Abstract | Soil nitrogen deficiency is one of the challenges to efficient soil use for the vast majority of crops, except for legumes. Nitrogen loss from the soil is also a significant and well-known source of negative impact on air and water quality. The aim of the research was to determine the impact of long-term use of different doses of organic and mineral fertilizers and their combinations, as well as liming on the nitrogen status of podzolized chernozem in field crop rotation. The study was conducted in stationary field experiments (NAAS certificate №. 86 and №. 88) of the Uman National University of Horticulture on podzolized chernozem. The article deals with the issue of changes in the nitrogen status of the podzolized heavy loamy chernozem of the Right-Bank Forest-Steppe in field crop rotation under the application of different doses of mineral and organic fertilizers, defecate and their combinations. It is shown that under the influence of these factors, the structure of the soil nitrogen fund changes and the ability of the soil to provide plants with nitrogen improves. It was found that the amount of different forms of nitrogen increased with the increase in the dose of their application. This indicates that the distribution of nitrogen into fractions is rapid and is determined by the agrochemical properties of the soil, in particular, its organic status. The highest nitrogen content of the non-hydrolyzed fraction was obtained with the organic-mineral fertilizer system – 113–1310 mg/kg of soil. The lowest content of non-hydrolyzed nitrogen fraction was obtained by applying only organic fertilizers. It has been established that the nitrogen balance at different doses of fertilizers and fertilization systems is significantly improved if the non-marketable part of the crop is left for fertilization. It was proved that with an increase in the dose of fertilizers applied, the capacity of the nitrogen balance, which characterizes the amount of its circulation in the agrocenosis, increases. | ||
| Key words | nitrogen, podzolized chernozem, defecate, mineral fertilizers, manure, fractions of nitrogen compounds, nitrogen balance | ||