UDC 633.15
DOI 10.36461/NP.2025.76.4.004

EFFECT OF FOLIAR TREATMENT WITH MICROFERTILIZERS ON MAIZE GRAIN YIELD
S.A. Semina, Doctor of Agriculture sciences, Professor;
I.V. Gavryushina, Doctor of Agricultural Sciences, Associate Professor;
E.V. Nikulina, Candidate of Agricultural Sciences; A.S. Paliychuk, Candidate of Agricultural Sciences;
G.V. Ilyina, Doctor of Biological Sciences, Professor
Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University" Penza, Russia, tel. (8412) 628-151, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Currently, the use of complex fertilizers with chelated microelements for foliar application is increasing in cultivation of maize. This article deals with experimental data on the effect of foliar treatment with microfertilizers on grain yield in the forest-steppe conditions of the Middle Volga region. The research was carried out in 2023-2024 at Konstantinovo CJSC in the Penza region on the leached chernozem soil. The experiment was conducted in quadruplicate according to generally accepted methods. The following microfertilizers such as Aktiv Azot, Plantafid, Mikrovit-3 (zinc chelate), Mikrovit K-1 (iron chelate), and Akvarin Universal were used for foliar treatment of the early-maturing maize grains. Foliar treatment with microelement fertilizers increased the number of generative organs per plant by 8.0-13.0%, with Mikrovit K-1 (iron chelate) being the most effective. Microfertilizer application with Aktiv Azot, Plantafid, and Mikrovit-3 (zinc chelate) increased cob length by 2.8-5.5%. Foliar treatment with the Plantafid and Akvarin Universal fertilizers effected on cob grain content, increasing the number of grains per cob by 6.7% and 2.5%, respectively. Microfertilizers increased the grain weight per cob by 4.0-15.3%, with foliar treatment of Plantafid being the most effective. It was observed that the foliar application of Plantafid effected primarily on grain productivity with an extra grain yield of 1.66 t/ha, or 22.2%. The application of other microfertilizers increased grain yield by 2.0 to 12.8%.
Keywords: corn, microfertilizers, grain, structure, yield.

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