Synthetic Pyrethroid Resistance in Field Strains of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) in Tamil Nadu, South India | Science Publications

American Journal of Applied Sciences

A. Regupathy¹  P. Duraimurugan¹ 

关键词: Insecticide resistance;    Helicoverpa armigera;    Coimbatore;    Tamil Nadu;    South India;   

DOI  :  10.3844/ajassp.2005.1146.1149

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Resistance to synthetic pyrethroids was diagnosed in the field population of American bollworm, Helicoverpa armigera (Hubner) from Coimbatore, Tamil Nadu, South India during 2003-2004 cropping seasons. A Discriminating Dose (DD) bioassay technique was used to monitor fortnightly changes in resistance at Coimbatore where number of crops served as host plants for this pest. The resistance level of various synthetic pyrethroids to DDs varied from 80.0 to 96.4%. The extent of resistance in terms of percent survival was 88.1-96.4, 87.2-94.3, 87.0-94.0, 84.3-94.2 and 80.0-91.8% for cypermethrin, fenvalerate, deltamethrin, lambda-cyhalothrin and beta-cyfluthrin, respectively.

【 授权许可】

Unknown