Influence of amorphous silicon dioxide on soybean growth indicators at the initial stages of ontogenesis

The article presents the results of studying the effect of pre-sowing treatment of soybean seeds with ApaSil agrochemical containing organic silicon compounds, comparing different application rates on the growth and development of plants at the initial stage of ontogenesis. The experiment was carried out in connection with the evaluation of the prospects for the use of silicon-containing substances of amorphous mass as growth regulators of soybean plants. The results are presented with the application rate of ApaSil 25 and 100 g/t in pre-sowing seed treatment, the results of sowing qualities of seeds, morphometric characteristics and partial enzymatic status of seedlings are given. The experiments were carried out on the new domestic variety Leader 1 (the year of inclusion in the register of admitted 2019), which was also zoned in the Oryol region. Seeds were treated the day before sowing in laboratory conditions. Untreated seeds served as control. It was found that the pre-sowing treatment of soybean seeds with the new preparation ApaSil stimulates the growth and development of plants at the initial stages of ontogenesis. The use of ApaSil in the pre-sowing treatment of soybean seeds with an application dose of 100 g/t makes it possible to obtain "more powerful" plants with a thick stem and a well-branched root system in comparison with the control. At the same time, laboratory germination increased by 9.3%, the ratio of dry seedling biomass in mg/linear cm increased by 9%, and the diameter of the stem cross section increased by 6.1%. An increase in the activity of benzidine peroxidases in soybean seedlings by 54.6% was observed, which confirms the activation of biochemical processes, resulting in improved growth characteristics.