Uman National University | today: 05/28/2026
| Author(s) |
Leontiuk I.B., Candidate of Agricultural Sciences, , Uman National University of Horticulture, Ukraine Карпенко В. В., , , |
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|---|---|---|---|
| Category | The Agronomy | ||
| year | 2026 | issue | Issue 108 part 1 |
| pages | 281-288 | index UDK | 633.853.494;631.547.47 | DOI | 10.32782/2415-8240-2026-108-1-281-288 (Link) |
| Abstract | The aim of the research was to establish the effect of pre-sowing treatment of seeds with biological preparations on the formation of the leaf apparatus, photosynthetic activity and productivity of winter rape in the conditions of the Forest Steppe of Ukraine. The research was conducted during the years 2023–2025 on the basis of the Uman National University National Research Center on typical deep chernozem. In the experiment, the effects of Reacom-SR-Ripak (4,0 l/t), Organic-Balance (5,0 l/t) and Azotophyt-r (2,0 l/t) were studied in comparison with the control without seed treatment. It was established that the pre-sowing treatment of seeds with biological preparations significantly influenced the dynamics of the formation of the leaf surface area of winter rapeseed. The highest values of the assimilation surface during the growing season were noted in the variant with the use of the drug Reacom-SR-Ripak, where the leaf area in the flowering phase exceeded the control by more than 2 times. The use of microbial preparations Organic-Balance and Azotophyt-r ensured smoother, but stable dynamics of the development of the leaf apparatus. The analysis of the net productivity of photosynthesis showed that in all investigated phases of plant growth and development, the lowest indicators were characteristic of the control.The maximum values of PPF were recorded in the budding-flowering phase in the variant with Reak-SR-Ripak (15.7 g/m² per day), which indicates the intensification of photosynthetic processes under the influence of available forms of trace elements. An increase in the photosynthetic activity of plants led to a significant increase in the yield of winter rapeseed. According to the average data for 2023–2025, the highest yield was formed in the version with Reak-SR-Ripak – 2.70 t/ha, which exceeded the control by 1,21 t/ha and was statistically reliable. Azotophyt-r and Organic-Balance drugs, which ensured a stable excess of control in all years of research, also showed high efficiency. The obtained results confirm the expediency of using biological preparations in the technology of growing winter rapeseed as an effective agrotechnical measure aimed at optimizing photosynthetic activity and increasing the level of crop yield. | ||
| Key words | winter rapeseed, microfertilizer, biological preparations, leaf area, net photosynthetic productivity, productivity | ||