THE INFLUENCE OF VARIETAL CHARACTERISTICS AND NUTRITIONAL BACKGROUND ON THE YIELD OF GREEN MASS OF MEDICINAL HYSSOP
Abstract
Purpose. To assess the influence of varietal characteristics and mineral nutrition backgrounds on the growth, development and yield of green mass of medicinal hyssop in order to develop scientifically based recommendations for optimizing the technology of its cultivation. Research methodology. In the fields of the NNPC of the Mykolaiv National Agrarian University from 2022 to 2024, experimental studies were conducted on the use of organo- mineral fertilizer and biological product when growing varieties of medicinal hyssop under conditions of natural moisture. Results. The Marquis variety consistently showed the highest productivity throughout the study period. There was significant variability in yield, starting at 3.05 t/ha (control value in the first year) and reaching a peak of 6.61 t/ha (second year, with Biochar Aktive + Groundfix®). Although there was a slight decrease in yield in the third year, the Marquis variety still maintained its leadership in this indicator compared to other studied varieties. Conclusion. Variety is one of the key factors determining the yield of green mass of medicinal hyssop. Studies have demonstrated a positive effect of mineral nutrition on the yield of green mass of hyssop in all studied varieties and years. Application of the drug Groundfix® led to an increase in yield by 10-20% compared to control plots. Application of Biochar Aktive was even more effective, increasing yield by 20-30% compared to control. The highest yield rates were recorded with the combined application of Biochar Aktive and Groundfix®, which resulted in a 40-60% increase in yield compared to the control. In particular, in the Marquis variety, the yield in the second year of vegetation reached 6.61 t/ha, almost twice as high as the control (3.98 t/ha). Given the results obtained, to ensure consistently high yields of green mass of medicinal hyssop, it is recommended to grow the Marquis variety and apply complex mineral nutrition using Biochar Aktive and Groundfix®.
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