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Characteristics of winter rapeseed yield formation depending on pre-sowing seed treatment and foliar fertilization with complex formulations

The aim of the study was to investigate the features of winter rapeseed yield formation and seed quality under the conditions of the Western ForestSteppe, depending on the biological potential of the studied hybrids and the effect of intensification factors on the achievement of maximum productivity. As a result of the research, the technology for winter rapeseed cultivation in the Western ForestSteppe was improved. It involves the application of mineral fertilizers at a rate of N120P60K90, seed treatment with a complex liquid micronutrient fertilizer, and foliar application of an organo-mineral fertilizer at the rosette stage (BBCH 32) and at the budding stage (BBCH 53). Maximum plant survival during the growing season was ensured by pre-sowing seed treatment with a complex micronutrient fertilizer (Oracle Seeds, 1 L/t) combined with foliar application of an organo-mineral fertilizer (Helprost, 1.0 L/ha): 93.8 % in the Atlant variety, 93.3 % in the Parallax hybrid, and 93.6–93.9 % in the DK Exima and DK Expose hybrids, with an average plant density before harvesting of 63.7, 57.7, 50.5, and 52.8 plants/m², respectively. Significantly higher yield structure parameters in the variety–hybrid combinations were observed when seeds were treated with a complex micronutrient fertilizer (1 L/t) in combination with two foliar applications of Helprost (1.0 L/ha). Under these conditions, the number of pods per plant was 134– 148, the number of seeds per pod was 22.5–26.5, and the thousand-seed weight was 3.92–4.06 g. It was established that improving the elements of winter rapeseed cultivation technology ensured the highest yields: 2.42 t/ha for the Atlant variety, 3.14 t/ha for the Parallax hybrid, and 3.34 and 3.47 t/ha for the DK Exima and DK Expose hybrids. These results were obtained with seed treatment using the complex micronutrient fertilizer Oracle Seeds (1 L/t) combined with foliar application of the organo-mineral fertilizer Helprost (1.0 L/ha) at the rosette and budding stages.

Key words: winter rapeseed, solution treatment, foliar feeding, complex micronutrients, organomineral nutrients, biological product, productivity.

Kurach O. https://orcid.org/0000-0002-1343-097X


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2026
AGROBIOLOGY №1 2026