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Scientific and Technical Bulletin of the Institute of Oilseed Crops NAAS (ISSN: 2078-7316) / 2025 / 39 / P. 106-115

Optimization of nutrition for linseed varieties influencing seed oil content under the conditions of the Southern Steppe of Ukraine
Zelinskyi Yu. A.

Linseed (oil flax) is one of the main, though still niche, oilseed crops in Ukraine, for which increasing seed yield and quality is particularly relevant under the conditions of the Southern Steppe. One of the most important directions in improving cultivation technology is the optimization of plant nutrition, which involves combining mineral fertilizers, modern biopreparations for pre-sowing seed treatment, and foliar feeding. The aim of this study was to assess the effectiveness of a resource-saving nutrition system for increasing the yield and oil content in the seeds of three linseed varieties. Field experiments were conducted on southern chernozem in the Mykolaiv region, involving the Vodohrai, Dobrodar, and Zaporizkyi Bohatyr varieties. The research investigated various combinations of mineral nutrition (N15P15K15), foliar feeding (Organic Balance, Boropti, Azotofit), as well as two pre-sowing seed treatment schemes (water and Azotofit). According to the results, all varieties showed a clear trend towards increased seed oil content when a comprehensive nutrition system was used compared to the control. In the control, this indicator ranged from 47.8% to 48.2%, while in the variant with all nutrition optimization elements, it increased to 49.3%–49.6%. A similar trend was observed for the conditional oil yield: with comprehensive optimization of nutrition, the oil yield increased to 0.74–0.77 t/ha compared to 0.39–0.42 t/ha in the control. The greatest increase in oil content and oil yield was achieved by combining mineral fertilizers, modern foliar feeding preparations, and the biopreparation Azotofit for pre-sowing seed treatment. The latter factor proved to be more effective than water treatment. The highest results of conditional oil yield were determined for the Dobrodar and Zaporizkyi Bohatyr varieties. The improved nutrition technology proposed here allows for stable linseed yields with increased oil content in seeds, which is highly important for the Southern Steppe zone of Ukraine and ensures the production of high-quality raw materials for the food and processing industries.

Citation: Zelinskyi, Y. A. (2025). Optimization of nutrition for linseed varieties influencing seed oil content under the conditions of the Southern Steppe of Ukraine. Scientific and Technical Bulletin of the Institute of Oilseed Crops NAAS, 39, 106-115.

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