The efficiency of the use of biopreparations in increasing the resistance of winter wheat to abiotic stress

The article considers the effect of processing adaptogens of seeds and crops of winter wheat on productivity and yield. Sowing and obtaining seeds of winter wheat was carried out on the basis of the experimental field of the Federal State Budgetary Scientific Institution "Federal Scientific Center for Legumes and Cereals" in the central natural and economic zone of the Oryol region, on dark gray forest soils. New adaptogens (BAs) were developed on the basis of natural components (soybean lectins and buckwheat bioflavonoids) patented as seed treatments. Winter wheat varieties were used in the research: "Leonida", "Scepter", "Thunder", "Sineva". Pre-sowing treatment of seeds and double treatment of crops was carried out in the autumn. An analysis of the height of plants in the phase of full ripeness showed the variability of the trait depending on the variety and treatment options. During the statistical evaluation of the results, a decrease in the interval of deviation to the mean value of the trait was revealed, which, accordingly, leads to evenness of crops. The influence of adaptogens on the density of productive stems, leading to an increase in the index, was also studied. Assessing the effect of biostimulants, the most significant is the treatment with adaptogens, which include buckwheat bioflavonoids (BS2). The conducted studies revealed that the treatment with BS leads to an increase in the productivity of the ear. The most significant is BS2 (+21.9% to control). The study of soft winter wheat with the use of adaptogens in the conditions of the Oryol region made it possible to identify differences in yield, which ranged from 6.58 t/ha to 8.04 t/ha for the best treatment options, the average excess of the control when processing BS2 was 0.65...1 .45 t/ha.