The influence of liming on changes in productivity indicators of modern soybean varieties

As is known, liming of acidic soils is the most important agrochemical method in increasing effective and potential soil fertility. Increased soil acidity creates unfavorable conditions for the growth and development of the cultivated plants. This problem is also relevant for soybeans, the demand for which from agricultural producers is constantly increasing due to its valuable food value. In this regard, the purpose of the research was to study the effect of liming on the change in productivity indicators for various soybean varieties. Field experiments were laid in the crop rotation of the Research and Educational Production Center "Integration" (Lavrovo village, Orel district, Orel region) in 2020-2021. The sowing was carried out on May 12. The plants were grown on plots of 10 m2 in quadruple replication. The method of placement of the experimental plots is systematic. The object of the research was 3 modern soybean varieties Svapa, Mezenka and Zusha, zoned in 5 regions. Plant productivity indicators (dry weight, seed productivity, number of seeds, number of seeds per seedpod, number of seedpods) were determined according to the generally accepted methods. The results of the field studies have shown that the use of this method of chemical reclamation of acidic soils in the technology of soybean cultivation leads to a significant increase in the values of plant productivity. It is shown that liming contributes to the activation of the accumulation of dry matter in soybean varieties by an average of 12.7% compared to the control option. At the same time, the Mezenka variety was characterized by the highest accumulation of dry matter compared to the control (by 18.8%). It was noted that this chemical reclamation was reflected in an increase in the seed productivity of soybean plants (by an average of 12.3%). It was found that the implementation of this agrochemical method had a positive effect on the increase in other productivity indicators.