The influence of foliar treatment with fertilizers based on humic acids on the yield and quality of irrigated potatoes in Saratov Zavolzhye

There was studied the effect of humic fertilizers on yield and quality potatoes irrigated dark chestnut soils Saratov Zavolzhye in 2018-2020. The object research Rosara variety released Volga region. For foliar treatments there were used products manufactured by Life Force Group LLC. It has been established that, average, three-fold treatment with Reasil Micro Hydro Mix over three years increased marketable tubers 1.90 t/ha, Amino Copper 4.02 t/ha. maximum increase yields obtained options mix use Carb N Humic (6.49 t/ha) Cu (5.57 t/ha). With application fertilizers, share total significantly (compared to control). In plants enriched an content starch (by 3-5% compared control) vitamin C 5-9% higher than noted.