Effect of nano chelated iron on essential oil percentage and essential oil compounds of Rosa damascena Mill.

This research was conductedon Rosa damascena Mill. in a randomized complete block design with three replications in the Alborz research station during 2012-2013. Treatments included nano chelated iron fertilizer at six levels: (0 (control), two times foliar spray (8g/plant), three times foliar spray (12g/plant), one time soil application (8g/plant), one time soil application (12 g/plant). The first foliar spray was done at blossoming stage. The second and third applications were 10 and 20 days after blossoming. Soil application was at blossoming stage accompanied by irrigation. The essential oil of samples was extracted by Clevenger and water distillation method for three hours. GC and GC/MS were used to determine the percentage and essential oil compounds of fresh flowers. According to the results of variance analysis, significant differences were found for the essential oil percentage, citronellol, icosane, octadecanol, Henicosane, Tricosane, Tetrosane, geraniol, and Tridane (p