High Cross-Pathogenicity (Excellent Kill Rate on Young Larvae):
When applied during the 1st to 3rd instar (early stage) larvae of the tobacco budworm, the pests ingest the virus-contaminated foliage. Once inside, the virus replicates rapidly within the host’s body. The peak of larval mortality typically occurs 4 to 7 days after application, achieving an overall control efficacy of 80% to 90% or higher, effectively crushing the pest population baseline.
Unique “Horizontal Transmission” and Longevity:
Larvae that die from the virus develop fragile body walls that easily rupture, releasing a massive number of viral occlusion bodies (OBs) onto leaves and fruits. Healthy larvae that subsequently feed on these surfaces contract the virus, creating a “pest-to-pest” chain reaction of infection across the field. This gives the virus a significantly longer residual effect than conventional chemical pesticides.
Highly Safe for Crops and the Environment (Protects Natural Enemies):
HaNPV is an extremely host-specific insect virus. It is completely non-toxic to humans, livestock, and crops. Most importantly, it does not harm beneficial insects such as Trichogramma wasps, predatory stink bugs (Arma custos), or lacewings. This makes it perfectly compatible with conservation biological control, creating a powerful synergistic effect.
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