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Bark beetle conditions, Northern Region, 1993

, : Bark beetle conditions, Northern Region, 1993. Forest Pest Management Report Northern Region, USDA Forest Service ( 94-3): ii + 30 pp.

Notes are given, by pest and by reporting area, on damage caused by 8 species of bark beetles (Dendroctonus spp., Ips pini, Scolytus ventralis, Dryocoetes confusus) to conifers (Pinus spp., Abies spp., Pseudotsuga menziesii and Picea engelmannii) in the Northern Region, comprising North Dakota, Montana and northern Idaho.

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Related references

Gibson, K.E.; Oakes, R.D., 1990: Bark beetle conditions. Northern region 1989. The results of aerial and ground surveys of forests in Idaho and Montana in 1989 are presented and compared to the results of similar surveys in 1988. Dendroctonus ponderosae infested a smaller area of the region in 1989 than in 1988. Populations...

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