| Abstract: | The essential oil yield and chemical composition of Salvia officinalis L. (Dalmatica origin) have been analyzed. Leaf samples for essential oil analysis were harvested at different developmental stages after treatment with foliar fertilizer Agroleaf® and foliar fertilizer + thidiazuron. In total, 10 constituents were identified and quantified. The main compounds in the essential oil that increased during the vegetative to the fruiting‐set stage are α‐thujon and camphor, whereas borneol, viridoflorol, and manool decreased. The effect of thidiazuron applied together with foliar fertilizer was established mainly at the flowering stage, increased essential oil yield by 16% over the control, and positively affected the percentage of β‐caryiophylene, α‐humulene, viridoflorol, and manool. Application of foliar fertilizer resulted in a greater increase of essential oil yield at the flowering stage in the combined foliar and thidiazuron application over the control. Both treatments decreased camphor at flowering and fruiting stages. |
