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Toxic effects of pyriproxyfen, neemarin, acetamiprid and Ferula assafoetida essential oil on the common pistachio psylla, Agonoscena pistaciae

Izadi, Hamzeh, Sarnevesht, Mahshid, Sadeghi, Reihaneh, Mahdian, Kamran, Jalai, Mohammad Amin
Archives of phytopathology and plant protection 2012 v.45 no.18 pp. 2236-2242
orchards, Psylla, Ferula assa-foetida, probit analysis, pistachios, essential oils, instars, pest control, pyriproxyfen, insect growth regulators, nymphs, pests, toxicity, chemical control, lethal concentration 50, acetamiprid, Iran
The common pistachio psylla, Agonoscena pistaciae, Burckhardt and Lauterer (Hemiptera: Psyllidae) is the key pest of pistachio orchards in Iran. Chemical control is the common method for the control of this pest. In this study, the effects of pyriproxyfen (an insect growth regulator), neemarin (a botanical insecticide), acetamiprid (a neonicotinoid) and Ferula assafoetida essential oil were investigated on the fifth instar nymphs of A. pistaciae. Probit analysis of concentration-mortality data was conducted to estimate the LC₅₀ values. The LC₅₀ values for neemarin, pyriproxyfen, acetamiprid and F. assafoetida essential oil were estimated to be 0.22, 0.52, 290 and 5.62 ppm, respectively. Our results showed that the fifth instar nymphs of A. pistaciae are very sensitive to neemarin and pyriproxyfen.