Effect of Organic and Mineral Fertilizers on Essential Oil Yield and Composition of Thymus syriacus Boiss. Cultivated Under the Mediterranean Conditions


Creative Commons License

Bahadırlı N. P., Bahadırlı M.

KSU TARIM VE DOGA DERGISI-KSU JOURNAL OF AGRICULTURE AND NATURE, cilt.29, sa.4, ss.968-976, 2026 (ESCI, TRDizin)

Özet

Thymus syriacus Boiss. It is an evergreen, perennial sub-shrub that is

distributed throughout the Eastern Mediterranean, including Türkiye.

Research Article

The use of organic and mineral fertilizers differs in their contributions to

sustainability and soil fertility. While the mineral fertilizers are believed

Article History

to ensure rapid nutrient availability, organic fertilizers play a vital role

Received : 28.05.2025

in maintaining long-term soil health and supporting sustainable

Accepted : 30.10.2025

production systems. In the present study, a field experiment on T.

syriacus Boiss. was conducted to examine the effects of organic and

Key Words

mineral fertilizers on essential oil (EO) content and composition in the

Carvacrol

Eastern Mediterranean Region of Türkiye. The treatments included

Essential oil

control (no fertilizer), manure (25 ton ha-1), vermicompost (10 ton ha-1),

Fertilizer

and mineral fertilizer (0.4 ton ha-1). Treatments were found to be

Thyme

significantly effective on EO content and components (p<0.05). In both

Vermicompost

years, control had lower EO content (1.12-1.87%); furthermore,

vermicompost had the highest EO content (1.30-2.57%). In the 2nd year,

fertilizer applications had significantly improved essential oil content

compared with the control. Carvacrol and o-cymene were found as the

main components. Carvacrol content ranged from 62.98% to 84.56%, with

the highest observed in second-year vermicompost-applied samples. As a

result, vermicompost organic fertilizer can be recommended for the

sustainable cultivation of T. syriacus , as it improves soil health while

maintaining high essential oil yield and carvacrol content similar to or

even greater than those achieved with mineral fertilizers.