The following is the effective pathogen on Helicoverpa armigera

Nuclear polyhedral virus is the effective pathogen on Helicoverpa armigera.
Helicoverpa armigera nuclear polyhedrosis virus (HaNPV) is a specific entomophatogenic virus isolated from cadaver of Helicoverpa armigera larvae.
Helicoverpa armigera single nucleopolyhedrovirus (HearSNPV) is a virulent pathogen of lepidopterans in the genera Heliothis and Helicoverpa, whereas Helicoverpa armigera multiple nucleopolyhedrovirus (HearSNPV) is a different virus species with a broader host range.