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

Table 3

Mean levels of macro- and microelements in Shafa and Hada rose petal samples (mg/kg).

Element		Shafa		Hada
Type	Element	Range	Mean ± SD	Range	Mean ± SD
Macroelements	Ca	0.305–1.912	0.73 ± 0.575	0.189–0.612	0.3 ± 0.129
	Mg	0.228–0.75	0.361 ± 0.1969	0.125–0.266	0.16 ± 0.04
	K	1.97–4.91	3.028 ± 0.867	1.418–2.739	1.95 ± 0.402
	Na	0.01–0.153	0.0604 ± 0.048	0.011–0.047	0.026 ± 0.015
Microelements	Se	0.015–0.027	0.0189 ± 0.015	0.0066–0.0201	0.01623 ± 0.004
	Mn	0.003–0.006	0.0041 ± 0.001	0.0020–0.0054	0.0034 ± 0.001
	Cu	0.004–0.001	0.008 ± 0.0036	0.0028–0.0071	0.004 ± 0.0014
	Fe	0.005–0.031	0.0166 ± 0.010	0.0026–0.0304	0.0162 ± 0.117
	Zn	ND–0.0023	0.054 ± 0.88	ND	ND