Nucleopolyhedrovirus (NPV) —Mechanism of Action: Precision “Targeted Destruction”
High Specificity: NPV typically infects only specific or closely related host species. It is entirely harmless to humans, livestock, birds, fish, and natural predators, ensuring ecological balance.
Infection Process: Upon ingesting treated foliage, the virus replicates rapidly within the pest’s tissues. Infected larvae exhibit “climbing disease,” dying at the top of plants. The subsequent liquefaction of the cadaver releases billions of new virions, triggering secondary infections in the field.
Key Advantages of Nucleopolyhedrovirus (NPV)
No Resistance Risk: Due to the long-term co-evolution between the virus and its host, pests rarely develop resistance compared to chemical pesticides.
Long-term Persistence: Released viruses can persist in soil or on plants, providing multi-season suppression and “one-application, long-term control.”
Zero Residue: Free from chemical toxins, fully meeting organic and green agriculture standards.
Common Targets
HaNPV: Widely used for Helicoverpa armigera in cotton, corn, and vegetables.
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