Acute Toxicity of Commonly used Insecticides to Red Pumpkin Beetle, Aulacophora foveicollis

Kruthi Reddy, Kallathuru

Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India.

Preetha, G. *

Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India.

Srinivasan, M. R.

Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India.

Kavitha, M.

Department of Vegetable Science, Tamil Nadu Agricultural University, Coimbatore, India.

E. Parameswari

Nammazhvar Organic Farming Research Centre, Tamil Nadu Agricultural University, Coimbatore, India.

*Author to whom correspondence should be addressed.


Abstract

Acute toxicity of commonly used insecticides viz., fipronil, cyantraniliprole, fluxametamide, phenthoate and thiamethoxam were determined against Red pumpkin beetle, Aulacophora foveicollis collected from the unsprayed pumpkin fields in the orchard of Tamil Nadu Agricultural University, Coimbatore using filter paper disc bioassay method. Based on the LC50 values (ppm) of different insecticides, the order of toxicity was found to be fipronil (6.822) > fluxametamide (11.953) > phenthoate (14.732) > cyantraniliprole (14.793) > thiamethoxam (29.465) at 24 and 48 hours after treatment (HAT). The respective LC95 values were 65.396, 87.077, 42.090, 203.017 and 205.013 against A. foveicollis at 24 HAT and 46.585, 54.242, 37.445, 223.682 and 146.267 at 48 HAT for fipronil, cyantraniliprole, fluxametamide, phenthoate and thiamethoxam, respectively. The study results clearly indicated that the phenyl pyrazole insecticide, fipronil was highly effective against the pumpkin beetle, A. foveicollis.

Keywords: Pumpkin beetle, insecticides, toxicity, median lethal concentrations


How to Cite

Kallathuru , Kruthi Reddy, Preetha, G., Srinivasan, M. R., Kavitha, M., and E. Parameswari. 2023. “Acute Toxicity of Commonly Used Insecticides to Red Pumpkin Beetle, Aulacophora Foveicollis”. International Journal of Environment and Climate Change 13 (10):3660-64. https://doi.org/10.9734/ijecc/2023/v13i103036.