Effect of Achillea millefolium Essential Oil on Two Spotted Spider Mite (Tetranychus urticae) on Ficus binnendijkii

Two spotted spider mite (Tetranychus urticae) is one of the most widespread and serious pests of farm and greenhouse plants. Nowadays, the use of plant essentials is considered due to the harmful effects of chemical pesticides. This study was conducted to assess the toxic potential of Yarrow (Achillea millefolium) essential oil as an effective acaricide on Tetranychus urticae on Narrow Leaf Fig plants (Ficus binnendijkii). In this study the randomized complete design was used with ۸ treatments (۷ treatments and ۱ control). The amount of dead mites and burned Narrow Leaf Fig leaves were estimated after ۲۴ hours. LD۵۰ value was measured. The results showed that increasing essential oil concentrations increased the toxic effect of the essential. At the concentration of ۲.۵ ml* L -۱, the essential caused the highest level of mortality of mites. LD۵۰ value was estimated ۱.۲۵ ml* L -۱. There was no burn on Narrow Leaf Fig leaves up to concentration of ۵ ml* L -۱ of essential.

Keywords:

Narrow Leaf Fig , mite , plant essential oil , Yarrow