Field Activity and Storage Stability of Anagrapha falcifera Nucleopolyhedrovirus (AfMNPV) in Spray-Dried Lignin-Based Formulations

Autor: Michael R. McGuire, Patricia Tamez-Guerra, Robert W. Behle
Rok vydání: 2003
Předmět:
Zdroj: Journal of Economic Entomology. 96:1066-1075
ISSN: 0022-0493
DOI: 10.1603/0022-0493-96.4.1066
Popis: A multiple-embedded nucleopolyhedrovirus isolated from Anagrapha falcifera (Kirby) (AfMNPV) has potential to be developed into a microbial bioinsecticide because the host range includes several economic pests. We tested spray-dried AfMNPV formulations after storage for insecticidal activity based on bioassays with neonate Trichoplusia ni (Hubner). Eight experimental lignin-based spray-dried formulations, a glycerin-based formulation, and an unformulated sample were made with virus stock from three commercial production lots. Samples of these formulations were stored at 30°C in individually sealed sample containers for destructive sampling after 1, 3, and 6 mo whereas the remaining product was stored in glass jars under refrigeration for up to 30 mo. Spray drying did not significantly reduce the initial LC50s of AfMNPV in experimental formulations compared with unformulated virus that was not spray dried. Refrigerated storage for 6 mo did not significantly lower virus activity of formulated sample...
Databáze: OpenAIRE