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An evaluation of cone and seed insects in selected seed production areas in Region 1, progress report Public Deposited
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An evaluation was made in 21 seed production areas and 1 seed orchard in Region 1 to identify the primary insect pests and to assess amount of injury caused. Cones from Douglas-fir, grand fir, western larch, lodgepole pine, ponderosa pine, and western white pine were collected periodically and examined. The primary insect species observed were western spruce budworm on Douglas-fir, grand fir, and western larch; midges on Douglas fir, grand fir, western larch, ponderosa pine, and lodgepole pine; coneworms on Douglas-fir, grand fir, western larch, and ponderosa pine; and the Douglas-fir cone moth on Douglas-fir.
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