Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-28T05:08:54.688Z Has data issue: false hasContentIssue false
  • English
  • Français

EFFECTS OF NUCLEAR POLYHEDROSIS VIRUS AND BACILLUS THURINGIENSIS ON WESTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE) 1 AND 2 YEARS AFTER AERIAL APPLICATION1

Published online by Cambridge University Press:  31 May 2012

R. F. Shepherd ,
T. G. Gray  and
J. C. Cunningham
R. F. Shepherd
Affiliation:
Pacific Forest Research Centre, Canadian Forestry Service, Victoria, British Columbia V8Z 1M5
T. G. Gray
Affiliation:
Pacific Forest Research Centre, Canadian Forestry Service, Victoria, British Columbia V8Z 1M5
J. C. Cunningham
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, Sault Ste. Marie, Ontario P6A 5M7
Get access Rights & Permissions [Opens in a new window]

Extract

An understanding of all environmental effects resulting from control actions is important in the selection of a method of managing insect populations. Effects may extend beyond the year of treatment and can modify management decisions. In 1978, a nuclear polyhedrosis virus (NPV) and Bacillus thuringiensis Berliner (B.t.) were tested as aerial spray applications against the western spruce budworm, Choristoneura occidentalis Freeman, on Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, near Cache Creek, British Columbia. The impact on population densities and on the incidence of NPV was measured in the treated and non-treated areas for 2 vears following the year of application, and is reported here.

Type
Articles
Information
The Canadian Entomologist , Volume 114 , Issue 3 , March 1982 , pp. 281 - 282
Copyright
Copyright © Entomological Society of Canada 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bousfield, W. and Flavell, T.. 1980. Effects of Dipel wettable powder for foliage protection against spruce budworm 1 and 2 years following aerial application. U.S. For. Serv., Northern Region, FIDM Rep. 80-9. 4 pp.Google Scholar
Dimond, J. B. and Spies, C. J. III. 1981. Two-year effects of a Bacillus thuringiensis treatment on spruce budworm, Choristoneura fumiferana (Lepidoptera: Tortricidae). Can. Ent. 113: 661–663.CrossRefGoogle Scholar
Harper, J. D. 1974. Forest insect control with Bacillus thuringiensis. Survey of Current Knowledge. Auburn University, Auburn, Alabama. 64 pp.Google Scholar
Hodgkinson, R. S., Finnis, M., Shepherd, R. F., and Cunningham, J. C.. 1979. Aerial application of nuclear polyhedrosis virus and Bacillus thuringiensis against western spruce budworm. B.C. Min. For./Can. For. Serv., Joint Rep. 10. 19 pp.Google Scholar
McMorran, A. R. 1965. A synthetic diet for the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae). Can. Ent. 97: 58–62.CrossRefGoogle Scholar
Morris, O. N. 1972. Laboratory and field trials of mixtures of various insect pathogens and insecticides against some forest insect pests. Can. For. Serv., Ottawa, Inf. Rep. CC-X-36. 42 pp.Google Scholar