Uman National University | today: 07/07/2025
| Author(s) | Yakovenko R. V., PhD, Associate Professor of the Department of Fruit Growing and Viticulture, Uman National University of Horticulture | ||
|---|---|---|---|
| Category | 203 "Horticulture and Viticulture" | ||
| year | 2021 | issue | №2,2021 |
| pages | 69-72 | index UDK | 634.11: 634.1-15 | DOI | 10.31395/2310-0478-2021-2-69-72 (Link) |
| Abstract | The regulation of the formation processes of the soil properties, and in turn, the productivity of the plantations has certain peculiar aspects and some complications in the fruit orchards which represent monoculture. A continuous maintenance of the orchards causes replant disease which has a serious effect on young plantations. When old plantations are removed from the soils, it is required to carry out certain practices aimed at improving their fertility and decreasing replant disease. In 2018 a laboratory-field trial aimed at studying replant disease was carried out in the experimental apple-tree orchard of Uman NAU and in the educational-scientific research laboratory specializing in the optimization of soil fertility in fruit-berry plantations. The research was focused on the soil after the uprooting the trees in the fall of 2016. In spring of 2018 mustard plants and marigold were sown, later green mass was plowed down, organic fertilizer was applied at rate 40 t/ha; the soil was changed for the one where the orchard was not grown (from the field). The research results of the effect of a continuous maintenance of the apple-tree plantations on the accumulation of toxins in the soil as well as the practices to control replant disease were considered. It was established that the cultivation of green manure and the application of manure (at rate of 40t/ha) facilitated the improvement of the biological activity of the soil micro-flora and reduced the toxic effect of the intensive use of chemical substances in the orchard and that of replant disease | ||
| Key words | apple-tree, replant disease, toxins, green manure, seed germination, length of spring wheat sprouts, biological activity | ||