||The results of the foliar application of micronutrients on biochemical parameters of potato tubers in the conditions of the Right Bank Forest-steppe of Ukraine. It has been established that application of micronutrient fertilizers Reakom, Crystalone special and Rozasol led to an increase in the content of dry matter, starch and vitamin C. According to the results of the chemical analysis, it was found that the highest content of dry matter was noted with variants containing microfertilizers with Reakom with a norm of 4.50 kg/ha on average for three years, the variety of Alladin – 24.55%, Dar – 24.34%. Analysis of dry matter content in plants treated with Crystalone special is characterized by the highest rates 2.50 kg/ha, in the Alladin variety – 24.14%, Dar – 24.18%, in comparison with the control variant, they were higher by 0.71% and 0.84%, respectively. With the use of foliar fertilization of microfertilizer, Rozasol, the highest content of dry matter in the tubers was characterized by a variant with an application rate of 2.50 kg/ha of Alladin grade – 24.06%, Dar – 24.06%. The highest content of starch was characterized by the variant with foliar fertilization by microfertilizer Reakom. Thus, Alladin variety, on average, over the years of research, the highest was recorded from the treatment of plants with the norm of microfertilizers of 4.50 kg/ha, where the content of starch was 21.7%, whereas in the control variant it was only 20.3%. Dar variety has similar indices, (average for three years) – 17.5%, in control – 16.3%. In general, microfertilizers used in foliar fertilization of potato plants were higher than the control vitamin C content.