The yield and income for potatoes in this Ukrainian replicated potato trial increased substantially. For a single 1 liter/ha Vitazyme application not long after emergence, yield increased by 3.1 tons/ha (9%), and income by 7,550 hrn/ha, while with an additional 1 liter/ha application at bloom the yield jumped by 4.8 tons/ha (14%) above the control. Income increased by 11,600 hrn/ha for two applications. The Vitazyme program works very well for potatoes in Ukraine.