author(s)
Idin zibaee, Hasan Mastari Farahani, Javad Mirarab Razi and Mohsen Nourzad Moghaddam

abstract
The resistance to synthetic pesticides and harmful effects of their accumulation in the environment has created the need for natural and non-persistent insecticides. The aim of this work was using controlled release with technology to solve the stability of essential oil in applying places with two formulations. In this research, Nanoemulsion of Eucalyptus essential oil based pellets were prepared by Dry Mixing Method and physical load of Nanoemulsion of Eucalyptus essential oil on PVA, which followed by pressing the mixture, using pellet maker apparatus, to form pellets. Insecticidal efficacy of produced pellets was investigated against adults (1-3 days old) of Tribolium castaneum (Herbst), Callosobruchus maculatus (F.), Rhyzopertha dominica (F.), Oryzaephilus surinamensis (L.) and Sitophilus oryzae (L.) under 28±2 ºC and darkness in laboratory condition. The mortality of two different formulations was recorded against mentioned pests and compared with phostoxin. The phostoxin showed 100% mortality after 24h in all studied pests other than Rhyzopertha dominica and Nano formulated pellet (formulation І) showed better mortality in compare with formulation ІІ. The stability of pellet recorded in four month against Sitophilus oryzae phostoxin revealed 100% mortality in all months but the efficacy of formulation І decreased after second month with 27.2% and formulation ІІ was effective with 71.2% mortality.