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Ukraine, as well as in the global crop production, grain crops occupy the largest acreages that illustrates their exceptional significance. Winter barley is a valuable food, forage and industrial crop. Its grains are used for cooking food (dry breakfasts, cereals, soups, bakery mixtures, baby nutrition), the extracts from barley malt have dietary and medicinal properties. Barley grains are widely used as fodder in cattle breeding, for example, when fattening pigs or in diets of cattle and poultry. One of the factors reducing the yields of winter barley in Ukraine over the past years is the unpredictability of weather conditions, which is associated with global climate changes worldwide. At the same time, under conditions of the unfavourable climate changes expressed in sharp air temperature drops and low precipitation, meeting the requirements of cultivation technologies of winter wheat, in particular scientifically substantiated application of mineral fertilizers, plays a significant role in the formation of the yield In addition to applying the most important macroelements, winter barley responds well to the application of microelements: boron, molybdenum, cobalt, etc., therefore, the use of different microfertilizers for increasing the crop productivity and improving the grain quality attracts the attention of many researchers.