Nuclear polyhedrosis virus for control of Spodoptera exigua larvae on glasshouse crops
1987
Smits, P.H. | Vrie, M. | Vlak, J.M.
The efficacy of a nuclear polyhedrosis virus, SeNPV, for controlling larval populations of the beet armyworm, Spodoptera exigua (Noctuidae) was studied in chrysanthemum, gerbera, kalanchoë and tomato crops in glasshouses. Applications of 1times10⁸ PIBs/m² on the various crops resulted in 95-100% larval mortality. Virus applications caused comparable levels of mortality in populations of early and late instar larvae. Reduction in feeding damage to the crops, however, was more pronounced when the larvae were early instars at the time of virus application. Single applications with the virus resulted in higher levels of larval mortality as double applications with 0.1% methomyl and diflubenzuron. The virus appears to be a potential control agent for the beet armyworm in Dutch glasshouses.
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