UDC 633.15
DOI 10.36461/NP.2024.72.4.009

THE FORMATION OF THE GRAIN YIELD OF CORN DEPENDING ON THE LEVEL OF MINERAL NUTRITION
S.A. Semina, Doctor of Agricultural Sciences, Professor;
I.V. Gavryushina, Doctor of Agricultural Sciences, Associate Professor
Federal State Educational Institution of Higher Education "Penza State Agrarian University",
Russia, tel. (8412)628-151, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

In corn nutrition technology, in addition to the application of mineral fertilizers to the soil, foliar fertiliza-tion of plants with complex fertilizers containing microelements is widely used. The article presents the results of a study on the influence of foliar treatment of plants with fertilizers with microelements depending on the level of root nutrition on the grain productivity of corn in the conditions of the forest-steppe of the Middle Vol-ga region. The research was conducted in 2015-2017 in the conditions of ZAO “Konstantinovo”, Penza district, Penza region, on leached chernozem. The two-factor field experiment was carried out in a four-fold replication using the split-plot method. First-order plots (factor A), on which an agricultural background was placed, were divided into second-order plots (factor B), on which variants of complex fertilizer treatments were placed. The object of the research is the early maturing (FAO 190) corn hybrid ROSS 199 MV. The conducted research has shown that the application of mineral fertilizers and foliar treatment of plants with complex fertilizers with microelements improve the indicators of corn grain yield structure. The greatest effect on grain yield was achieved by applying nitrogen-phosphorus-potassium fertilizers, which contributed to an additional production of 12.2-46.7 %. Both on unfertilised agricultural background, and in improving root nutrition, the best results were achieved in foliar treatments of corn with chelated microfertilizers (Tsitovit and Siliplant Universal), which contributed to an average increase in grain yield of 0.64-0.76 t/ha and 0.54-0.66 t/ha respectively.
Keywords: corn, mineral fertilizers, complex fertilizers with microelements, morphological parameters, yield.

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