Aerial Forest Spraying Against Spruce Budworm-A Problem of Mutual Interest in Canada and the United States

• Published in: Journal of Economic Entomology
• Main Author: Webb, F. E.
• Format: Text
• Language: English
• Published: Oxford University Press 1960
• Subjects: Articles; Canada; Pacific; Atlantic salmon
• Online Access: http://jee.oxfordjournals.org/cgi/content/short/53/4/631; https://doi.org/10.1093/jee/53.4.631

By far the largest amount of aerial forest spraying in both Canada and the United States has been against the spruce budworm ( Choristoneura fumiferana (Clem.)). Although initial development of the method was based largely on cooperative trials, subsequent full-scale operations in the two countries have been carried out largely on opposite sides of the continent: in the Atlantic Region of New Brunswick and Quebec in Canada and in Pacific Northwest and Rocky Mountain Regions of the U.S.A. The paper reviews recent Canadian and United States operations from the point of view of differences in host forests and outbreak behavior, spraying policy, techniques and effectiveness. Particular reference is made to the problem of damage to Atlantic Salmon populations in New Brunswick and to current sets of the feasibility of reducing DDT concentration to minimize adverse effects while maintaining acceptable pest population reduction.