The formation of the productivity of the chickpeas depends on the fertilizer system

Purpose. To study the influence of the fertilization system on the formation of yield and quality of chickpea grain. Methods. The method of continuous harvesting and weighing from each plot, the Kjeldahl method, the mathematical and statistical method. Results. It was noted that seed bacterization with microbiological preparations based on nitrogen-fixing, phosphorus-mobilizing bacteria and mycorrhizal fungi increased the yield of chickpea grain by 4.1-25.8% and the crude protein content in it by 0.43-3.15%. The use of only nitrogen-fixing bacteria for seed bacterization provided an increase in crop grain yield by 4.1-7.6%, crude protein content by 0.09-0.57%; the use of phosphorus-mobilizing bacteria in combination with mycorrhizal fungi - 8.1-19.6% and 0.02-0.78%, and the combination of nitrogen-fixing and phosphorusmobilizing bacteria and mycorrhizal fungi provided the greatest increase - 13.1-25.8% and 0.32-1.17%. The application of phosphorus-potassium fertilizers at a rate of 30 kg of dry matter/ha also contributed to an increase in grain yield and crude protein content, respectively, by 4.1-8.3% and 0.16-0.72%. The application of these types of fertilizers at a rate of 60 kg of dry matter/ha increased the grain yield by 6.6-12.4%, and the crude protein content by 0.72-1.20%. The application of "starting" and average rates of nitrogen fertilizers against the background of phosphorus-potassium fertilizers was more effective and increased the level of grain yield and the content of crude protein in it, respectively, by 8.4-23.5% and 1.0-2.17% and 10.6-26.8% and 1.31-2.44%. Conclusions. It was noted that the highest grain yield of common chickpea (2.30 t/ha) and the content of crude protein (26.02%) were provided by seed bacterization with the composition Bioinoculant, 2.5 l/t + Organic balance monophosphorus, 1.5 l/t + Mycofriend, 1.5 l/t and the application of mineral fertilizers at the rate of N60P60K60.