COMPLEX FERTILIZERS AS A FACTOR OF REGULATING THE PRODUCTIVITY OF CORN

The article presents the results of studies of the effect of foliar treatment with complex water-soluble fertilizers with microelements on morphobiometric indicators and yield of corn, depending on the level of root nutrition. At the first level of improved root nutrition, the foliar treatment of corn with complex fertilizers made it possible to further increase the intensity of the linear growth of plants by 3.6-9.7%, and on the second – by 3.3-9.0% relative to the variants without treatment. The smallest linear increase in soil fertilization at both levels was obtained using Humate+7B. The largest number of developed cobs on fertilized agro-backgrounds were formed by plants with foliar treatment with Cytovit and EcoFus (an increase of 13.5-20.0%), and on an uncomfortable agrofone when using Siliplant universal (an increase of 9.0%). Against the background of natural soil fertility, with the use of complex fertilizers, the weight gain of one plant was 4.8-16.1%. Against the background of nitrogen-phosphorus fertilizers, an increase of 6.1-12.0% was obtained, and when applying N12090К60, the increase varied from 6.2 to 14.7%. At all studied levels of root nutrition, the greatest stimulating effect was obtained during the treatment of crops with Cytovit. The best indicators of phytomass yield were recorded for all agricultural backgrounds plants with foliar treatment with Cytovit, the gain to the variants without complex fertilizer was 15.8- 16.5%. EcoFus treatment turned out to be in the second place in terms of efficiency, an increase in green mass of 11.6-14.9% was obtained. The maximum yield of dry matter was formed with the complex use of Ecofus and Cytovit with mineral fertilizers – 17.4-18.0 t/ha.