UDC 633.82: 633.15
DOI 10.36461/NP.2025.75.3.019

INFLUENCE OF GROWTH REGULATORS ON PRODUCTIVITY AND GRAIN QUALITY OF WINTER WHEAT VARIETIES
Shalygina A. A. Researcher at the Adaptive Landscape Agriculture Department of the North Caucasus Research Institute of Mountain and Foothill Agriculture – Branch of the Federal State Budgetary Institution of Science of the Federal Center
“Vladikavkaz Scientific Center of the Russian Academy of Sciences” 363110, North Ossetia-Alania, Mikhailovskoe village, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

This article deals with winter wheat varieties response to pre-sowing treatment and foliar application with the Novosil 10% fertilizer at different stages of plant development with different application rates. Current research was carried out in 2021-2023 in the foothill zone of the Republic of North Ossetia-Alania on the experimental plots of the North Caucasus Research Institute of Mountain and Foothill Agriculture VSC RAS. Pre-sowing treatment of wheat seeds of the Grom, Bagrat, and Trio varieties with the Novosil 10% fertilizer at a dose of 50 ml/t increased the yield to 4.47; 4.74; 5.16 t/ha, while in the control conditions it was 4.02; 4.09; 4.12 t/ha. Combined application with Novosil 10% pre-sowing treatment – 50 ml/t + 30 ml/ha spraying during the growing season during tillering and heading stages, the yield of the varieties was the highest: 4.78 t/ha for Grom, 4.89 t/ha for Trio, and 5.40 t/ha for Bagrat. The yield of other varieties was higher than the control for Grom by 0.24-0.53 t/ha, Bagrat by 0.68-1.13 t/ha, and Trio by 0.36-0.62 t/ha. Seed treatment and foliar application increased the quality indicators, the absolute grain weight by 24 g/l for Grom, by 22 g/l for Bagrat, and by 20 g/l for Trio. The Novosil 10% fertilizer at a dose of 30-40 ml/ha increased the protein content in wheat grain by 1.68-1.69%, starch by 6.33-6.41%, and the weight of 1000 grains increased by 2.6-3.0 g. The net profit per hectare was from 10.3 to 20.45 thousand rubles. The profitability in the fourth variant when cultivating the Grom variety was 42.5%, the Bagrat variety – 61.0%, the Trio variety – 45.0%, and with Novosil 10% treatment the profitability was slightly – 40 ml/ha during tillering and heading stages, but higher than the control by 4.5; 18.6; 5.5%, respectively.
Keywords: sowing, norms, terms, winter wheat, yield, variety, growth regulator, grain quality.

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