The spruce budworm is an important enemy of the Douglas fir-true fir forests in Oregon. It can be successfully controlled by aerial spraying with DDT.
The influence of air temperature on spruce budworm growth, the growth of the host, and interrelationships between insect and host were studied on 15 areas...
Keywords: High School Contact Program, UW Pack Forest, Enrollment Statistics, H.I. Nettleton, European Forestry Tour, With The Classes, McDonald-Adair Report, Forestry Research, OSC UW Branch, 1958 European Industrial Forestry Report