The responsiveness of spring wheat to the use of biological preparations in the gray forest soils of the Fore Kama region of the Republic of Tatarstan

For many years, the largest sown areas in the Republic of Tatarstan have been devoted to spring wheat. Revealing the effect of biological preparations on growth processes, plant resistance to unfavorable conditions and stresses is an important issue in the cultivation technology within the framework of biological agriculture. In studies conducted in 2018-2019 with the Ulyanovskaya 100 spring wheat variety, biological fungicides and an adaptogen were used to increase resistance to adverse conditions from the collection of the Kazan State Agrarian University. The complex use of biological fungicides in the conditions of gray forest soils made it possible to increase the yield of spring wheat by 10.6 %, and the combined use of biological fungicides and an adaptogen contributed to an increase in the yield to 15.2 %.