Influence of Pre-sowing Seed Treatment and Foliar Fertilizers on the Photosynthetic Activity of Soybean Crop
Year: 2026
Type: article
Abstract: The aim of the study was to study the effect of pre-sowing treatment of seeds with bacterial preparations and foliar top dressing on the formation of the photosynthetic apparatus, dry matter accumulation and productivity of soybean crops of the Slavna variety in the conditions of the Right-Bank Forest-Steppe of Ukraine. The research was conducted in 2024–2025 in the experimental fields of the Institute of Feed and Agriculture of the Podillia NAAS. The soil cover of the experimental plots is represented by gray medium loamy soils with a humus content of 2.03%, a slightly acidic pH reaction (5.0) and an average level of mineral nutrition. Pre-sowing treatment of soybean seeds was carried out with the bacterial preparation Rizoline (3.0 l/t), with the bioprotector Rizosave (1.0 l/t) and the organo-mineral fertilizer Helprost (2.0 l/t), and foliar top dressing was carried out with the organo-mineral fertilizer HELPROST in key phases of vegetation. The parameters of the photosynthetic activity of plants were estimated by the leaf surface area, photosynthetic potential and dry matter accumulation. The obtained data were subjected to statistical processing by generally accepted methods, which ensured the reliability of the results. The results of the studies indicate that the combination of bacterial preparations and foliar feeding contributed to a more intensive development of the leaf apparatus and an increase in the efficiency of photosynthesis. The largest leaf surface area (64.5 thousand m²/ha) and photosynthetic potential (3.90 million m² days/ha) were obtained in the variant with pre-sowing seed treatment Rizoline + Rizosave + Helprost in combination with foliar feeding HELPROST. Analysis of the dynamics of dry matter accumulation showed its gradual increase with each phase of development and maximum values during the seed filling period. The lowest dry biomass yield (4.7 t/ha) was observed in the variant with treatment only with Helprost without foliar fertilization, while the application of foliar fertilizer provided its increase to 6.7 t/ha. The results obtained confirm the effectiveness of the integrated use of bacterial preparations and organo-mineral fertilizers in the technology of soybean cultivation, which allows to increase the photosynthetic potential of plants, the accumulation of dry matter and the formation of a high and stable crop yield in conditions of unstable temperature regime and limited moisture supply of the Right-Bank Forest-Steppe.
Source: Agriculture and Forestry
Authors: Vasyl Petrychenko, Oleksandr Pantsyrev
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDGs: Zero hunger, Life on land
Open Access status: diamond
OpenAlex ID: W7134884419