Insecticide resistance in the field populations of whitebacked planthopper, Sogatella furcifera (Horváth) (Hemiptera: Delphacidae) from two rice-growing regions of Telangana

Abstract

The whitebacked planthopper (WBPH), Sogatella furcifera (Horváth), is one of the major pests of rice throughout Asia. The widespread use of insecticides to control WBPH has resulted in the development of insecticide resistance, leading to frequent failures in effective pest management. The aim of this study was to evaluate the insecticide resistance in the field populations of Sogatella furcifera from two rice-growing regions of Telangana viz., Rajendranagar and Nalgonda to two insecticides viz., imidacloprid and triflumezopyrim, during the Kharif season of 2024. The Rajendranagar and Nalgonda populations exhibited high resistance to imidacloprid, with resistance ratios of 18.65-fold and 33.19-fold respectively, while resistance to triflumezopyrim was comparatively low, with resistance ratios of 1.57-fold and 2.1-fold respectively. The results obtained will be beneficial for implementing IPM strategies for the effective use of insecticides against WBPH.