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A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park

Creator:: Dewey, Jerald E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A 3-year evaluation of Douglas-fir cones in Montana and Yellowstone National Park, Wyoming, showed the western spruce budworm, Choristoneura occidentalis Freeman, and midges were the most common and injurious insects found each year. Injury was so severe at some plots that no sound seeds could be found.
Resource Type:: Technical Report
Full Text:: . DEPARTMENT OF AGRICULTURE / FOREST SERVICE DIVISION OF STATE AND PRIVATE FORESTRY • NORTHERN REGION

Evaluation of pine bark beetle infestations on Blue Mountain, Missoula District, Lolo National Forest, Montana

Creator:: Ciesla, William M. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An evaluation of the status of bark beetle infestations in ponderosa pine stands on Blue Mountain, Missoula District, Lolo National Forest, was made March 30 and April 4, 1972, at the request of personnel of the Missoula District. Extensive group killing of ponderosa pine in the vicinity of Blue Mountain...
Resource Type:: Technical Report
Full Text:: , Forest Service, Northern Region, Division of State and Private Forestry, Insect and Disease Report 71-7

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:: , Flathead Indian Agency. 2/ Supervisory Plant Pathologist, Division of State and Private Forestry

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:: and Private Forestry, U.S. Forest Service, Missoula, Montana. • DIVISION OF STATE & PRIVATE FORESTRY

Distribution of larch casebearer parasites in the crowns of western larch trees in the northern region

Creator:: United States. Forest Service. Northern Region. State & Private Forestry, Tunnock, Scott, McGregor, Mark D., and Bousfield, Wayne E.
Abstract:: A study was made to determine the distribution of parasites of the larch casebearer, Coleophora laricelia, within crowns of western larch, Larix occidentalis. The most common parasites recovered in order of their abundance, were: Agathis pumila (Ratz.), Diciadocerus sp. near westwoodii, Spilochalcis albifrons (Walsh), and MesopoZobus sp. Parasitism by A....
Resource Type:: Technical Report
Full Text:: of State and Private Forestry Northern Region Missoula. Montana 5200 • MARCH 1972

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:: , Montana, 1971. USDA, Forest Serv., Northern Reg., Div. of State and Private Forestry. Report No. 71-2

Potential for larch casebearer defoliation in the Northern Region, 1972

Creator:: Bousfield, Wayne E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The larch casebearer Coleophora laricella (Hbn.) is now established throughout all western larch stands in Region 1. Population levels have begun to fluctuate in some of the older infested stands; however, it is still on the increase in more recently invaded territory. During the past 2 years work was begun...
Resource Type:: Technical Report
Full Text:: of western larch by the larch casebearer in the Northern Region--1971. USDA, Forest Service, Division

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:: 1972 level in 1973. tit • DIVISION OF STATE & PRIVATE FORESTRY MISSOULA, MONTANA ENTRANCE ROAD

Evaluation of bark beetle infestations on Cook Mountain, Ashland District, Custer National Forest, Montana

Creator:: Dewey, Jerald E. and Meyer, Hubert E.
Abstract:: The bark beetle infestation in ponderosa pines defoliated by pine looper, Phaeoura mexicanaria (Grote) on Cook Mountain was resurveyed in 1971. Most of the surviving defoliated trees have "greened up" appreciably. Bark beetle activity was greatly reduced. The red turpentine beetle, Dendroctonus vaZens LeConte, was the only bark beetle observed...
Resource Type:: Technical Report
Full Text:: Service, Region 1, Division of State and Private Forestry, Missoula, Montana. • • • • -2

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:: checked for root rot and wood borers. • DIVISION OF STATE & PRIVATE FORESTRY MISSOULA, MONTANA

ScholarsArchive@OSU

A three year evaluation of Douglas-fir cone and seed insects in Montana and Yellowstone National Park

Evaluation of pine bark beetle infestations on Blue Mountain, Missoula District, Lolo National Forest, Montana

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

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

Distribution of larch casebearer parasites in the crowns of western larch trees in the northern region

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

Potential for larch casebearer defoliation in the Northern Region, 1972

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

Evaluation of bark beetle infestations on Cook Mountain, Ashland District, Custer National Forest, Montana

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

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