Fodder beet productivity on irrigated chestnut soils in the Zavolzhye region during foliar treatments with fertilizers based on humic acids

There was studied the effect of fertilizers based on humic acids on fodder beet crops cultivated on irrigated dark chestnut soils of the Engels district of the Saratov region in 2018-2020. The object of research was the Eckendorfskaya yellow variety of fodder beet released in Povolzhye. Fertilizers based on humic acids produced by Life Force Group LLC were used for foliar treatments. On average, over three years, three-time spraying of fodder beet crops with a solution of Reasil micro Amino B (1.0 l/ha per each plant) increased the yield of root crops by 7.2 t/ha (13% of the control). The maximum increase in yields (21 t/ha or 37% of the control) was obtained annually on the option of joint use of Reasil micro Hydro Mix (1.0 l/ha) and Reasil Carb-N-Humik (2.0 l/ha per each plant). Foliar treatments with fertilizers based on humic acids increased the viability of plants for harvesting and increased the average weight of one root crop. At the same time, the content of vitamin C significantly increased in root crops (11% to control) and insignificantly the amount of sugars (3% to control). By increasing the yield, fertilizers based on humic acids significantly increased the removal from the soil of nitrogen, phosphorus, potassium by 89.44 and 138 kg/ha, respectively compared to the control.