Effects of Macro- and Microelements in Soil of Rose Farms in Taif on Essential Oil Production by Rosa damascena Mill.

Table 5

Levels of some constituents of essential oil in concrete extracted from petals of flowers collected from Shafa and Hada farms.

Constituent of essential oil	Shafa		Hada
	Range	Mean ± SD	Range	Mean ± SD
Phenylethyl alcohol	14.57–27.88	22.27 ± 4.339	18.45–26.66	21.32 ± 2.97
Citronellol	2.42–4.83	3.878 ± 0.876	5.05–7.15	6.18 ± 0.79
Geraniol	1.27–4.46	2.713 ± 1.194	4.95–8.03	6.39 ± 1.03
Eugenol	0.67–3.06	1.68 ± 0.66	1.25–3.27	2.56 ± 0.72
Nonadecane	13.07–16.06	15.03 ± 1.021	11.57–15.78	14.03 ± 1.61