Contact, Repellency and Ovicidal Effects of Four Lamiaceae Plant Essential Oils against Tetranychus urticae Koch (Acari: Tetranychidae)

Salman S. Y. , Saritas S., Kara N., Aydinli F., Ay R.

JOURNAL OF ESSENTIAL OIL BEARING PLANTS, vol.18, no.4, pp.857-872, 2015 (SCI-Expanded) identifier identifier


Tetranychus urticae Koch (Acari: Tetranychidae) is an important pests in the world. Many plant essential oils show a broad spectrum of activity against pests. The usage of essential oils in two spotted spider mite control is seen as an alternative to pesticides. This study investigated the contact and repellency effects of Lavandula x intermedia Emeric ex Loisel., Salvia officinalis L., Rosmarinus officinalis L. and Hyssopus officinalis L. essential oils on Tetranychus urticae. The chemical composition of the four essential oils was characterized by GC-MS. In this study, 1, 5, 10 and 20ml/l concentrations of essential oils were used to conduct adult and nymph period applications on two spotted spider mite through leaf disc-spray tower method. In addition, the ovicidal effect of essential oils on Tetranychus urticae eggs was evaluated. It was found that in all concentrations of the essential oils of lavandin, sage, rosemary and hyssop essential oils had high contact effect on T. urticae adults and nymphs especially at the 48 and 96h. It was found that the repellency effect of all concentrations of essential oils was higher against nymphs of two spotted spider mites than on the adults. Moreover, it was found that the essential oils of lavandin, sage, rosemary and hyssop had ovicidal effects on T. urticae eggs; the highest ovicidal effect was found in lavandin, and the lowest effect was found in sage. The data may suggest that essential oils of all four Lamiaceae plants can potentially be used for the management of Tetranychus urticae.