2026, Vol. 14, Issue 1, Part A

The aim of this study was to know the effect of some safe natural extracts, i.e. Hibiscus extract (HE) at 10 and 20 g/L, licorice extract (LE) at 10 and 20 g/L and Aloe extract (AE) at 50 and 100 ml/L, under two levels (70 and 100%) of recommended fertilization level (N, P and K), which lead to reduced use of chemical fertilizers and the production of a safe product of sage (Salvia officinalis, L.). The vegetative growth; plant height (cm), number of main branches/plant, plant fresh and dry weight (g/plant), chlorophyll contents (SPAD, values), fresh herb yield (t/fed.), oil%, and volatile oil composition (using, GC) during study were investigated. The results showed that all natural extract; HE, LE and AE under (70, and 100%) levels of N, P, K, fertilizer achieved the highest vegetative growth, oil% and main compounds of volatile oil. Moreover, natural extracts; AE 100 ml/L, LE and HE at 20g/L respectively, recorded higher values for vegetative growth, oil content and major compounds of sage volatile oil and yield (t/fed.) during this study than other treatments. From the above, we recommend spraying with natural extracts; AE 100 ml/L or LE 20 g/L or HE 20 g/L two spray/cut to obtain high quality and productivity of sage under (70%) level of N, P, and K fertilizer, which lead to reduced use of chemical fertilizers and the production of a safe product.