Effects of various fertilizer mixture applications and harvesting time on main volatile compounds of thyme (Thymus sipyleus BOISS. subsp. sipyleus BOISS. var. sipyleus L.)

Abstract

The thyme (Thymus sipyleus BOISS. subsp. sipyleus BOISS. var. sipyleus L.) plant was rooted from its natural environment at an altitude of 1750 m from Beyşehir Muslu Yayla location and was cultured at 1345 m altitude in Beyşehir İslibucak. Nitrogen + Phosphorus + Potassium (K1), Micro Elements (Boron + Copper + Iron + Manganese + Molybdenum + Zinc) (K3) and Nitrogen + Phosphorus + Potassium + Micro Elements (Boron + Copper + Iron + Manganese + Molybdenum + Zinc) (K2 and K4) was used as fertilizer mixtures for thyme production. Plant samples were harvested in three separate periods in August, September and October 2019 and SPME-GC-MS was used for the analysis of its volatile components. The results showed that the applied fertilizer mixtures and the harvest period provided a variety in the amounts of the thyme plant main volatile components. The highest value of p-cymene (43.76%) in the October harvest of thyme produced using K4 fertilizer mixture application, the highest value of γ-terpinene (24.79%) in the August harvest of thyme produced using K4 fertilizer mixture application, the highest value of thymol (20.26%) in the August harvest of thyme produced using K3 fertilizer mixture application and the highest value of carvacrol (67.01%) in the September harvest of thyme produced using K1 fertilizer mixture application were observed.

Keywords

• thyme
• fertilizer mixture applications
• harvesting time
• volatile compounds
• spme
• gc-ms
• kekik
• gübre karışımı uygulamaları
• hasat zamanı
• uçucu bileşenler
• spme
• gc-ms