The development of agriculture necessitates the adoption of new and effective methods to increase yields and enhance product quality. Obtaining high-quality agricultural products is becoming increasingly challenging due to climate variations, soil depletion, and decreasing arable land. These factors underscore the need to explore additional technologies that can enhance the cultivation of crops to meet the demand for quality produce. Pre-sowing seed treatment with metabolically active substances represents one such promising technology.
 The objective of our study was to investigate the impact of metabolically active substances and their combinations on the processes of yield formation and the quality of carrots from the Nantska seed variety. The following substances were used for pre-sowing treatment of carrot seeds: vitamin E, ubiquinone-10, paraoxybenzoic acid (POBA), methionine, and magnesium sulfate (MgSO4).
 Our findings revealed a positive influence of metabolically active compounds on various parameters, including root length, thickness, average root mass, and sugar content in the carrots. The combination of substances, specifically vitamin E + POBA + methionine + MgSO4, exhibited the most significant effect on root length throughout the growth period, surpassing control measurements by 5.23 % to 14.5 1%, depending on the stage of the study. All tested compounds, except for the vitamin E solution, had a favorable impact on the average root mass. Pre-sowing seed treatment with ubiquinone-10 resulted in the highest monosaccharide content in carrot roots after one month of storage, surpassing control measurements by 13.2 %. Although the monosaccharide and disaccharide content in carrot roots decreased during storage in all studied conditions, it remained higher compared to the control measurements, indicating enhanced nutritional value.
 In summary, pre-sowing seed treatment of carrots with metabolically active compounds and their combinations demonstrates the potential to improve both quantitative harvest indicators and sugar content in carrot roots, reflecting increased nutritional value. Incorporating pre-sowing treatment with metabolically active compounds into cultivation practices can be valuable in the production of vegetable crops.