The inhibitory effect of E. adenophorum oil extracts on wet and dry mycelial weights of P. myriotylum were determined according to the method described by Dikbas et al. . The oil extracts were prepared using DMSO (0.5% v/v) as the initial solvent carrier followed by dilution with potato dextrose broth (PDB) to obtain test concentrations of 40, 60, 80, 100 and 120 μg/ml. Next, a 40 ml liquid medium containing different concentrations of E. adenophorum oil extracts was placed in each Erlenmeyer flask. Four 4 mm mycelial disks, cut from the periphery of the 2-day-old culture, were added to each flask. The control treatments (without oil extracts) were inoculated using the same procedure. The flasks were then incubated at 28 ± 1°C for 7 days in an incubator shaker. The fungal mycelia were harvested by filtration (separating them from liquid culture) and then washed three times with distilled water. The wet weight of mycelia was determined. The mycelia were then dried at 80°C for 6 hours, and the dry weight of mycelia was determined. Each treatment consisted of three replicates.