Investigation on the insecticidal efficacy of novel pellet formulation against stored products beetles

Abstract : Applying essential oils fumigant toxicity in stored products pests control has sharpened recently. Since these products have low penetration power and vapor pressure, their use in crop depth is restricted. The aim of this work was using controlled release technology to solve this problem. In this research, 1,8-Cineole based pellets were prepared by Dry Mixing Method and physical load of 1,8-Cineole 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.) and Rhyzopertha dominica (F.) under 28±2ºC and darkness in laboratory condition. LC50 of 1 gram pellets against T. castaneum in 24 h and 48 h was 1.6 and 0.91 ml active ingredient per L air, respectively. LC50 ¬value for R. dominica and C. maculatus in 12 h was 0.7and 1.48 ml a.i./L air, respectively. Physical load of essential oils and their constituents could be performed on biodegradable polymers and their application in stores will be possible by this manner
Keyword : Controlled release, 1,8-Cineole, PVA, pellet formulation, fumigant toxicity
Author(s) : , I. Sharifian, M. H. Safaralizadeh, P. Najafi-Moghaddam
Downloads : 1330

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