UDC 633.15
DOI 10.36461/NP.2025.75.3.024

EFFECT OF FOLIAR TREATMENT WITH MICROFERTILIZERS ON CORN YIELD
S.A. Semina, Doctor of Agricultural Sciences, Professor;
I.V. Gavryushina, Doctor of Agricultural Sciences, Associate Professor;
A.S. Paliychuk, Candidate of Agricultural Sciences
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.

The concept of mineral nutrition of agricultural crops is currently being improved and, in recent years, foliar treatment with microfertilizers has become a common agricultural technique in the cultivation of corn. This article deals with the effect of foliar application with complex fertilizers containing microelements on photosynthetic activity and green mass yield of corn. The research was carried out in 2023-2024 at Konstantinovo, JSC (Penza region), on leached chernozem. Field experiments were conducted in quadruplicate, using generally accepted methods. Complex fertilizers containing microelements, such as Aktiv Azot, Plantafid, Mikrovit-3 (zinc chelate), Mikrovit K-1 (iron chelate), and Akvarin Universal were used for foliar feeding. Foliar treatment with Mikrovit-3 (zinc chelate) had the greatest effect on photosynthetic activity, increasing the average leaf surface area by 35.7% and the photosynthetic potential by 35.8%. Dry matter formation was more intense with the Aktive Azot fertilizer treatment. The assessment of productivity showed that the best results were obtained with Mikrovit-3 (zinc chelate), which increased green mass yield by 60.6% and dry matter by 53.8%. Foliar treatment with Azot Aktiv fertilizer resulted in increases of 24.9% in phytomass and 43.0% in dry matter.
Keywords: corn, complex fertilizers with microelements, green mass, photosynthetic activity, yield.

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