Application of microbiological fertilizers in barley cultivation technology

The current research was aimed at assessing the yield and grain quality of spring barley inoculated during sowing with microbiological fertilizers “Azotovit” and “Phosphatovit” on leached chernozem in the forest-steppe conditions of the Middle Volga region at a dose of 2 l/t. These microbiological fertilizers “Azotovit” and “Phosphatovit” used for seed inoculation had practically no effect on field germination and safety of spring barley. With the pre-sowing treatment of Azotovit seeds, the sparseness of crops averaged 11.1%, with the treatment of Phosphatovit seeds - 9.5%, and with the treatment of both Azotovit and Phosphatovit seeds amounted to 7.4% at 15.7% on control. The use of the fertilizers led to an increase in the productivity of spring barley seeds up to 3.25 t/ha. The highest grain yield was obtained with the combined use of “Azotovit” and “Phosphatovit”, where the yield was higher than in the control by 0.36 t/ha (12.3%). The number of seeds per 1 crop and the mass of seeds per 1 crop, with the combined use of “Azotovit” and “Phosphatovit”, on average over two years of research increased by 2.8 pcs and 0.108 g, relatively, compared with the control group. Grain quality indicators have improved. Treatment of seeds of spring barley before sowing with micronutrient fertilizers increased the weight of 1000 grains by 3.5 g in comparison with the control group; increased the grain size by 2.7-13.1 g/l. The smallest increase in the grain productivity was observed in the case with seed treatment before sowing “Azotovit” and “Phosphatovit” by 2.7 g/l and 3.9 g/l, relatively, and the greatest increase in the grain productivity was obtained in the case with the combined use of both fertilizers by 13.1 g/l. This indicates a positive effect from the use of microbiological fertilizers in the barley cultivation technology.