Oilseed rapeseeds were planted outdoors in plastic pots. Then,
two similar leaves were collected from the plants after five weeks.
The collected leaves were put on a filter paper in the Petri dishes to
keep wet. Different concentrations (0.25, 0.50, 0.75, and
1.00 ml ml1) of ZCEO were performed on the leaves infected with
S. sclerotiorum in two ways. First, the leaves were inoculated with a
mycelial agar plug before 5 ml of each essential oil was sprayed on
the two leaves. Second, the same procedure was performed, but
after treating ZCEO for 12 h. Besides, Tween 20 and carbendazol
(1.00 mg ml1) were treated as blank and positive control. Two
leaves per Petri dish represented a replicate and the experiment
was conducted in triplicate. The Petri dishes were sealed with
Parafilm and incubated at 20 C.