| Summary: | The quantitative yield and essential oil percentage and composition of two important savory species in response to various fertilizers were explored in a field experiment as a factorial study based on a randomized complete block design with three replications in north Lorestan, Iran, in 2017–2019. The first factor was assigned to three mycorrhizal fungi (<i>Funneliformis mosseae</i>, <i>Rhizophagus irregularis</i>, and <i>Glomus fasciculatum</i>), phosphate biofertilizer (Baravar-2), fish manure (800 kg/ha), cattle manure (20 t/ha), vermicompost (5 t/ha), and a control (no fertilization); the second factor was assigned to two savory species, including <i>Satureja khuzestanica</i> and <i>S. rechingeri</i>. The results of the combined analysis of variance for the second and third years showed that the simple effects of fertilizers and species were significant on all recorded traits, except for some constituents of the essential oil. Among the mycorrhizal fungi, <i>R</i>. <i>irregularis</i> and <i>S. khuzestanica</i> outperformed <i>S. rechingeri</i> in all traits, except for essential oil content and yield. The interaction between year and species was significant for all traits. The essential oil content of <i>S. rechingeri</i> in the third year (5.1%) was 18% higher than that of <i>S. rechingeri</i> in the second year (4.3%) and 41% higher than that of <i>S. khuzestanica</i> in the third year (3.6%). According to the results, the foliar application of vermin compost at a rate of 5 t/ha can contribute to the sustainable production of both savory species, improving their growth and essential oil yield.
|
|---|