Document Type : Research Paper

Authors

• A. Taghizadeh Saroukolai
• S. Moharramipour

Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran

Abstract

Nowadays, application of plant essential oils has been highly considered as an alternative for synthetic insecticides especially in stored-product pests. Stored products such as beans are attacked by different stored-product insects. Among them, Callosobruchus maculatus (F.) is one of the most important pests of legumes. In this research, oviposition deterrence and persistence of essential oils of Thymus persicus (Roniger ex Reach F.) and Prangos acaulis (Dc.) Bornm were tested on C. maculatus at 27 ± 1 ⁰C and 60 ± 5% R.H. under dark condition. Oviposition deterrence was assessed at 6 concentrations from 360 to 7140 ppm and with five replications. Results showed that oviposition deterrence of both essential oils were increased with increase of oil concentration and higher deterrence was significantly recorded in P. acaulis. LT₅₀ values showed that the speed of mortality in P. acaulis was significantly faster than that of T. persicus. The respiratory toxicity of T. persicus essential oil on C. maculates was more stable than that of P. acaulis.

Keywords

• Oviposition deterrence
• Persistance
• Callosobruchus maculatus
• Thymus persicus (Roniger ex Reach F.)
• Prangos acaulis (Dc.) Bornm