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Observations on the decline of western larch defoliated by larch casebearer in the northern region

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Numerous stands of western larch, Larix occidentalis, on the St. Joe, Coeur d'Alene, and Kaniksu National Forests, Idaho, show signs of gradual deterioration following repeated defoliation by larch casebearer, Coleophora Zaricella Hbn. (Tunnock et al. 1969). Stand deterioration can occur after 4 years of continued heavy defoliation. The main symptom...
Resource Type:: Technical Report
Full Text:: • USDA FOREST SERVICE/NORTHERN REGION Report No. 1-72-7

Evaluation of forest insect conditions on the National Bison Range, Moiese, Montana

Creator:: Bousfield, Wayne E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An evaluation of forest insect conditions on the National Bison Range at Moiese, Montana, was made on August 28, 1972.
Resource Type:: Technical Report
Full Text:: •nn • USDA FOREST SERVICE/NORTHERN REGION Report No. I

Potential for defoliation of ponderosa pine stands by pine butterfly on the Bitterroot and Lolo National Forests, Montana in 1972

Creator:: Bousfield, Wayne E., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Epidemic levels of the pine butterfly, Neophasia menapia (Felder and Felder) have been evident in ponderosa pine stands in the Bitter Root Valley since 1969. Evaluations of this infestation were initiated in 1970 to assess overwintering egg populations at 20 locations within the infestation (Ciesla et al. 1971). Defoliation was...
Resource Type:: Technical Report
Full Text:: USDA FOREST SERVICE/NORTHERN REGION Report No. 72-9 5200

Evaluation of mountain pine beetle infestations, Big Belt Mountains, Townsend District, Helena National Forest--1973

Creator:: United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D., and Meyer, Hubert E.
Abstract:: Mountain pine beetle, Dendroctonus ponderosas Hopk., reached near epidemic levels in lodgepole pine stands in the Sulphur Creek-Black Butte area. Lodgepole pine are probably more susceptible due to the overstocked conditions of stands, and high incidence of girdling of the base of trees by porcupines. The infestation in this area...
Resource Type:: Technical Report
Full Text:: USDA FOREST SERVICE/NORTHERN REGION • • • • 5200 Report No. 73

Observations on the impact of dwarf mistletoe on Douglas-fir in western Montana

Creator:: Haglund, Steve, Dooling, Oscar J., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Dwarf mistletoe is known to reduce both height and diameter growth and thus reduce the yield of an infested stand. This comparison of two similar stands--one healthy and the other infested--gives an indication of the impact of this parasite. The healthy stand has produced 1.5 times the board foot volume...
Resource Type:: Technical Report
Full Text:: .11n1••• n•••••n USDA FOREST SERVICE/NORTHERN REGION 5200

A pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead and Gallatin National Forests, 1978

Creator:: Bennett, D. D., Bousfield, Wayne E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A multistage sampling survey to measure annual and cumulative mortality of lodgepole pine by mountain pine beetle was conducted on the Beaverhead and Gallatin National Forests, 1978-79. The survey area, 270,000 acres, was stratified into three intensity classes from aerial sketchmapping. This was followed by large scale (1:6,000) aerial photography,...
Resource Type:: Technical Report
Full Text:: , 1977, in the Northern Region. USDA Forest Service, Northern Region, Missoula, Montana. There are

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

Creator:: Dewey, Jerald E., Jenkins, Michael J., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Insect damage was extensive to Douglas-fir, ponderosa pine, western white pine, and western larch cones at most seed production areas surveyed in 1979. From 70 to 100 percent of the cones from several collecting periods were injured. Moderate damage (40-70 percent of cones injured) occurred to Douglas-fir, ponderosa pine, western...
Resource Type:: Technical Report
Full Text:: Service Northern Region State & Private Forestry P.O. Box 7669 Missoula, Montana 59807 species those

An evaluation of cone and seed insects in selected seed production areas in Region 1, progress report

Creator:: Dewey, Jerald E., Jenkins, Michael J., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 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...
Resource Type:: Technical Report
Full Text:: • FOREST SERVICE • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 3450 Report No. 79-16

Incidence of wood borer activity in green ash windbreak plantings in North Dakota

Creator:: Tunnock, Scott, Tagestad, Arden, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An evaluation was made during midsummer 1972 to measure damage by the carpenterworm, Prionoxystus robiniae, and the ash borer, Podosesia syringae, to green ash in windbreaks in North Dakota. Intensity of infestation was determined in four land resource areas and four age classes of windbreaks. Of the 96 windbreaks examined...
Resource Type:: Technical Report
Full Text:: , Division of State and Private Forestry, Northern Region, USDA Forest Service, Missoula, Mbntana; and

Succession functions of forest pathogens and insects : ecosections M332a and M333d in northern Idaho and western Montana : summary

Creator:: Byler, James W., Hagle, Susan K., United States. Forest Health Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: We analyzed the effects of pathogens and insects on forest succession in the absence of fire or management, addressing a number of related questions: 1. What is the rate of change in such forests? 2. How significant are the roles of pathogens and insects in the forest change? 3. How...
Resource Type:: Technical Report
Full Text:: Service 3 tate and Private Forestry Forest Health Protection Northern Region FHP Report No. 00-09

ScholarsArchive@OSU

Observations on the decline of western larch defoliated by larch casebearer in the northern region

Evaluation of forest insect conditions on the National Bison Range, Moiese, Montana

Potential for defoliation of ponderosa pine stands by pine butterfly on the Bitterroot and Lolo National Forests, Montana in 1972

Evaluation of mountain pine beetle infestations, Big Belt Mountains, Townsend District, Helena National Forest--1973

Observations on the impact of dwarf mistletoe on Douglas-fir in western Montana

A pilot survey to measure annual mortality caused by the mountain pine beetle in lodgepole pine on the Beaverhead and Gallatin National Forests, 1978

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

An evaluation of cone and seed insects in selected seed production areas in Region 1, progress report

Incidence of wood borer activity in green ash windbreak plantings in North Dakota

Succession functions of forest pathogens and insects : ecosections M332a and M333d in northern Idaho and western Montana : summary

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