In the village Vasylivka, Popilnya district, Zhytomyr region, an experiment was established to compare the yield of corn per grain with the use of RCD at the rate of 40 kg/ha in comparison with feeding technology without the use of RCD.

An RCT was also carried out with the addition of zinc to study the effect of this trace element on the growth, development and yield of the crop. Liqa S 8:24 and Liqa S+ 8:24 Zn products were used.