Maryam Bagheri, Mohammad Mehdi Rahimi
Department of Agriculture, Yasooj Branch, Islamic Azad University, Yasooj, Iran
Key words: Ferula assafoetida, essential oil, aphid.
In order to evaluate the effect of different levels of Ferula asafoetida essential oil on controlling the black bean aphid a research was done in a completely random model with four replications, in 2012. Treatments were consisted of essential oils of assafoetida leaf and seeds in levels of (0, 100, 200, 300, 400 and 500 microliter per mL). This plant was collected from rangelands of Eastern Dena (Kakan) and their essential oils were extracted after drying and grinding by distillation method using Clevenger apparatus. The test was conducted in temperature of 25±1 ° C and a relative humidity of 60±10% (16 hours in darkness and 8 hours in lightness) using Topical test. The results showed that all essential oils had significant effect on the death rate of black bean aphid in level of 1% compared to the control. The highest death rate of black bean aphid was obtained in treatment of 500 microliter per mL of asafoetida leaf and seed essential oil. The minimal losses of black bean aphid were observed in treatment of control. Due to the high insecticidal property, the essential oil of this plant can be recommended as a low-risk insecticide for controlling the black bean aphid.
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