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New investigations on the biological control of introduced forest insects. 2nd Report on the work of the European Station of the Commonwealth Institute of Biological Control, Deiemont, Switzerland. Part II



New investigations on the biological control of introduced forest insects. 2nd Report on the work of the European Station of the Commonwealth Institute of Biological Control, Deiemont, Switzerland. Part II



Anz. Schadlingsk, 38: pt. 7, 104-109



In this second part of a report on recent work carried out by the Commonwealth Institute of Biological Control, information is given on investigations in connection with the introduction of parasites and predators for the control of forest pests in Canada. It is reported that, whereas Adeiges (Dreyfusia) piceae (Ratz.) on fir has been increasing steadily in Newfoundland and has continued to be injurious in British Columbia, populations have declined in continental areas such as New Brunswick.

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