Assessment of spruce sawfly infestation and control potential via parasitization in spruce forests.
The spruce forests of the Northeastern States are threatened by a spruce sawfly, which may be even more serious than the spruce budworm of 20 years ago. The extent of the infested area is shown and the possibility of control by parasitization is discussed.
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H. J. MacAloney (1936) studied this question.
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