Carveol is a monoterpene alcohol with nematocidal activity.1 It reduces hatching in M. incognita egg masses and reduces mobility of M. incognita second-stage juveniles when used at concentrations of 250 and 500 mg/L. Soil application of carveol (250 mg/kg) reduces M. incognita-induced gall formation in tomato plants.
1.Echeverrigaray, S., Zacaria, J., and Beltr?o, R.Nematicidal activity of monoterpenoids against the root-knot nematode Meloidogyne incognitaPhytopathology100(2)199-203(2010)