Effectiveness of a complex microbial preparation for oats and spring barley growing

Abstract

Today, one of the main challenges for agriculture is to increase grain production and its profitability while reducing the use of chemicals. Addressing this issue is a key to meeting the human need for quality and affordable food. One of the ways to improve the efficiency of grain industry is to use effective microbial-based biological products. They will help to reduce the chemical burden on the environment and produce high quality crops. The aim of this study was to evaluate the effectiveness of treatment and the growing season of spring oats and barley with a complex microbial preparation based on promising strains of Azotobacter vinelandii 7 AI, Azotobacter chroococcum 8 AI and Bacillus megaterium 39 AI isolated by us earlier. Field trials were carried out on the experimental fields of the Skvyra Experimental Station of Organic Production of the Institute of Agroecology and Nature Management of the National Academy of Agrarian Sciences of Ukraine (Ukraine, Kyiv region, Skvyra) in 2022. For the treatment of plants during the growing season, strains of microorganisms and their compositions were used in critical phases of crop development. After 6–7 days, the effect of these compositions on some plant growth parameters was studied. To confirm the hypothesis about the effect of treatment with promising microorganisms on the ability of plants to increase the amount of photosynthetic pigments, a quantitative analysis of plants for their content was performed. The positive effect of plant treatment was found not only on the quantity of the harvest, but also on its quality. The results of the research indicate the effectiveness of the use of a complex microbial preparation based on the proposed strains of microorganisms for such cereals as oats and spring barley. Treatment with a biopreparation based on effective, environmentally friendly and agronomically useful strains of microorganisms improves both growth and photosynthetic processes, which in turn activates their development and enhances the productivity of these crops, while significantly improving the quality of grain.