Phytotoxic Effect of Essential Oil from Hyssop (Hyssopus officinalis L.) against Spring Wheat and White Mustard

Hyssop essential oil is a rich source of biologically active compounds. This study aimed to characterize the chemical composition of essential oil from the hyssop herb and its phytotoxicity against germination and initial growth of wheat and mustard. The main compounds of the oil were identified as isopinocamphone and pinocamphone. In a Petri dish experiment, the oil mainly inhibited the germination and initial growth of wheat, whereas mustard was less affected. In conclusion, hyssop oil displays phytotoxic potential against the studied species and should be tested further.