The article presents the results of the field testing of the new generation Voema fertilizer as a foliar fertilizer with two variations: Voema Flower & Fruit and Voema Calmag. The results showed that the administration in two doses of the fertilizer Voema Flower & Fruit - 1.0 l/ha and Voema Calmag - 1.0 l/ha ensured a significant increase of grapes of 1.0 t/ha, or by 7.0% more than the unfertilized control, where a harvest of 14.3 t/ha was formed. The Blackjak (standard) also had a significant effect on the productivity of the vine plants - 3.0 l/ha. The yield increase was 0.4 t/ha or 5.0% more compared to the control variant. The applied fertilizer also contributed to the accumulation of sugar and vitamin C in the grape juice. Their concentration increased compared to the control variant on average by 1.3–1.5% and 1.3–2.1 mg/l. Total acidity decreased on average by 0.30%. When Blackjak fertilizer was applied, the concentration of sugar in grape juice increased by 1.3% and vitamin C by 2.5 mg/l.