Spring barley response to application of experimental biopreparation

Abstract

This paper discusses the findings of microplot field experiment to study the effect of the experimental preparation “Naturost-M” on the growth and productivity of barley under the conditions of the Vologda Region. The preparation was developed on the basis of live bacteria Bacillus megaterium (manufactured by the OOO Biotrof). The experiment was conducted in the experimental field of the Vologda Research Center of the Russian Academy of Sciences in 2019 and 2020. The research target was spring barley (Hordeum vulgare L.) of the variety Sonet - one of the main grain crops of the Vologda Region. Based on the two-year research results, we noted the increase of growth indices of spring barley under the action of the studied preparation. In 2019, the evaluation of the area of plant assimilation apparatus showed that the preparation “Naturost-M” statistically significantly increased both individual leaf area and leaf area of the whole plant up to 23%. In the experiment of 2020, the content of chlorophyll a in the variant with the preparation “Naturost-M” increased to 27%, chlorophyll b - to 17%, the total chlorophyll - to 36%, and carotenoids - to 10%. Dry weight indices of experimental plants were higher than those of the control up to 19% depending on the phase of ontogenesis. The analysis of grain productivity of plants showed that under the influence of the preparation “Naturost-M” the number of productive shoots increased by 9-10%, kernel weight - by 3%, and the number of kernels per ear remained at the level of the control. We found that the total yield of experimental plants exceeded the control by 7-9%.