Canadian Forest Service Publications
The possible use of viruses in the control of spruce budworm. 1972. Bird, F.T.; Cunningham, J.C.; Howse, G.M. pages 69-75 in Proceedings of the Entomological Society of Ontario, Volume 103.
Issued by: Great Lakes Forestry Centre
Catalog ID: 34339
CFS Availability: PDF (request by e-mail)
A nuclear polyhedrosis virus (NPV) and an entomopoxvirus (EPV) of the spruce budworm, Chorislolleura filllliferalla (Clemens), were propagated in the laboratory and sprayed from a helicopter on 8 small plots near Pembroke, Ontario, in 1971. The efficacy of the spray was evaluated by diagnosis of samples of larvae to determine the percentage infection, by population reduction studies, and by defoliation analyses. In the following year (1972) the plots were again sampled to assess the carry-over potential of the viruses from one generation to the next and encouraging results were obtained.