Patterson, N.A. 1966 The influence of spray programs on the fauna of apple orchards in Nova Scotia. XVI. The long-term effect of mild pesticides on pests and their predators.. Journal of Economic Entomology 59: 1430-1435.
Notes: This paper summarizes the results of a 13-year test of the integration of chemical and biological control methods for apple pests in Nova Scotia, demonstrating that this approach has promise. Species mentioned in connection with McIntosh and Delicious apples include Lecanium corni and Phenacoccus aceris.