- Dorais, Louis
Entomology and Pathology Service, Department of Energy and Resources
The Quebec Department of Energy and Resources conducted in 1979 its 10th spraying program against the Spruce Budworm. Since 1970 a total of 18 millions hectares have been treated: on a year base treated areas range from 11,600 hectares in 1970 up to 3,936,400 hectares in 1973.
Since 1977 the spraying programs have been concentrated in the Lower St. Lawrence and Gaspe areas of economic priorities. The infestation first reported in 1967 in western Quebec built up til 1975-1976 and is decreasing since that time.