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Scientific and Technical Bulletin of the Institute of Oilseed Crops NAAS (ISSN: 2078-7316) / 2025 / 39 / P. 98-105

Influence of nutrition optimization on seed yield of oil flax varieties under conditions of the Southern Steppe of Ukraine
Baklanova T. V., Hamaiunova V. V., Khonenko L. H., Havryliuk V. B.

The article presents the results of a three-year study on the influence of seed pre-sowing treatment, nutrition optimization, and foliar feeding on the seed yield of oil flax (Linum usitatissimum L.) varieties Orfei and Dobrodar under the conditions of the Southern Steppe of Ukraine. The experiments were conducted on southern chernozem soil at the experimental field of the State Institution “Mykolaiv State Agricultural Research Station of the Institute of Climate-Oriented Agriculture of NAAS” according to generally accepted methods. Before sowing, the seeds were treated with the biological preparation Bio-gel (200 ml/t). During the 4–6 leaf stage, foliar feeding was applied using the complex micronutrient fertilizer Micromineralis Oil Crops (0.5 l/ha). The results showed that oil flaxseed yield was significantly influenced by variety, nutritional variant, and growing year. The highest yield was obtained with a combination of Bio-gel seed treatment, mineral fertilization with N₃₀P₃₀K₃₀ or N₁₅P₁₅K₁₅, and foliar feeding with Micromineralis Oil Crops – the yield increase compared to the control ranged from 0.35 to 0.42 t/ha (25–30%). Pre-sowing seed treatment with Bio-gel increased yield by 0.12–0.18 t/ha on average compared to water treatment. The Dobrodar variety demonstrated slightly higher productivity, which is apparently due to its better response to nutrition optimization. Analysis of variance confirmed that the nutrition factor had the most significant effect on seed yield (LSD0,5 = 0.08–0.10). The application of an integrated approach to plant nutrition ensured better nutrient uptake, improved drought resistance in plants, and contributed to a more stable yield level.

Citation: Baklanova, T. V., Hamaiunova, V. V., Khonenko, L. H., & Havryliuk, V. B. (2025). Influence of nutrition optimization on seed yield of oil flax varieties under conditions of the Southern Steppe of Ukraine. Scientific and Technical Bulletin of the Institute of Oilseed Crops NAAS, 39, 98-105.

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