Variability of economic and regulatory removal of nutrients of spring barley under the action of various preparates

In this study, we analyzed the influence of the pre-sowing treatment of spring barley seeds with the biological product Rizoagrin and the micronutrient fertilizer Tenso Cocktail against the background of the mineral fertilizer diammofosk on the economic and standard removal of the main nutrients and the utilization rates of nitrogen, phosphorus and potassium from the soil and mineral fertilizers in the conditions of gray forest soil. The study was carried out on the territory of the Vakhitovo LLC farm in the Kukmorsky municipal district of the Republic of Tatarstan. In the control variant, the economic removal by grain and straw of spring barley was equal to 32.9, 18.9 and 39.6 kg / ha of nitrogen, phosphorus and potassium, respectively. The main part of the economic removal of nitrogen and phosphorus was alienated in the composition of grain, and potassium in the composition of straw. There was a significant increase in economic carry-over, depending on the drugs used and their combinations. The greatest impact on the economic removal was exerted by the combined use of the biological product Rhizoagrin and the Tenso Cocktail microfertilizer against the background of diammophoska - 68.5 kg / ha of nitrogen, 42.9 kg / ha of phosphorus and 92.5 kg / ha of potassium, which is 2.1, 2.2 and 2.3 times more than the control variant. Insignificant fluctuations in the normative removal of nutrients were noted, but the differences between the variants of the experiment were not as strong as those observed in the economic removal.