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Formation of productivity elements of corn hybrids of different maturity groups depending on the effect of foliar fertilizers in the conditions of the Right-Bank Forest-Steppe of Ukraine

The article presents the results of two years of research on the effect of foliar feeding with various combinations of water-soluble fertilizers and antistressants on the formation of plant productivity elements and the biological grain yield of corn hybrids of different maturity groups in the conditions of the Right-Bank Forest-Steppe of Ukraine. The research was conducted in 2024 and 2025 at the «Horizon-2» farm in Bila Tserkva district of Kyiv region. A two-factor field experiment was set up using the split-plot method in four replicates. The first-order plots were three corn hybrids of different maturity groups: 1 – P7818 (FAO 240); 2 – DKS3730 (FAO 280); 3 – DKS4541 (FAO 380). The second-order plots consisted of seven variants of foliar fertilization with solutions based on different types of water-soluble fertilizers with an anti-stress product. Feedings were carried out during microphases 14–16 and 16–18 on the BBCH scale. The area of the sowing plot was 140 m², and the accounting plot was 100 m². In terms of its effect on the formation of key elements of plant productivity and the biological yield of corn grain, the best option was the one in which two foliar feedings were carried out with a mixture of urea (N21), Nanovit corn complex fertilizer (1.5 l/ha), and Quantum AminoMax antistressant (1.0 l/ha). On average, over two years of research the number of grains in one corn cob of hybrids P7818, DKS3730 and DKS4541 in this variant was 5.5 %, 6.8 %, and 4.6 % higher, respectively, than in the control, and their weight was on 7.2 %, 8.2 %, and 6.2 % higher. In 2024, the biological grain yield of corn hybrids P7818, DKS3730, and DKS4541 in this variant was 0.67 t/ha (14.8 %), 0.69 t/ha (14.3 %), and 0.72 t/ha (12.9 %), respectively, higher than in the control, and in 2025 – by 0.64 t/ha (10.2 %), 0.73 t/ha (10.8 %), and 0.80 t/ha (10.0 %), respectively. Two foliar feedings with solutions without the adding the Quantum AminoMax 200 antistressant also provided a significant increase in the biological yield of corn grain of all hybrids compared to the control.

Key words: corn, complex fertilizers, antistressants, hybrid, biological yield, foliar feeding, productivity elements.

Storozhenko V. https://orcid.org/0009-0003-3413-0196


Rozhkov A. https://orcid.org/0000-0001-9138-7973


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YEAR: 
2025
AGROBIOLOGY №2 2025