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Creator:: Tunnock, Scott, Stein, John D., Tagestad, Arden, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An active infestation of ash borer, Podosesia syringae (Harris) was detected in green ash, Fraxinus pennsylvanica Marsh, surrounding the Bowman-Haley Reservoir in 1973. A survey in 1974 showed that 40.4 percent of 690 trees examined contained active ash borer attacks. Forty-three out of 140 windbreaks were sampled and each one...
Resource Type:: Technical Report
Full Text:: administered by the Corps of Engineers. These results were reported to both State and Private Forestry in

Creator:: Tunnock, Scott
Abstract:: The Douglas-fir tussock moth, Orgyia pseudotsugata McD., periodically defoliates Douglas-fir, true firs, and other host trees in forests of the western United States. In the Northern Region, these infestations occur about once every decade. This history covers the earliest recorded outbreak in northeastern Washington from 1928 to 1930 and includes...
Resource Type:: Technical Report
Full Text:: ., Northern Region, Div. of State and Priv. Forestry, Missoula, Mont., I&D report No. 71-42. • • 0 • S • S

Creator:: Williams, R. E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: "Holes" with dead, dying, and downed trees in the forest canopy could be reliably identified on 9- by 9-inch Kodak Ektachrome Infrared Aero film 2443 as root disease centers. Film scales larger than 1:4000 were best for detection of these "holes." Most commonly occurring causal organisms in root diseased trees...
Resource Type:: Technical Report
Full Text:: REGION COMPACT • • n U. S. DEPARTMENT OF AGRICULTURE DIVISION OF STATE AND PRIVATE FORESTRY FOREST

Creator:: Dewey, Jerald E., Ciesla, William M., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Over 10,000 acres of aerially visible western hemlock looper defoliation on grand fir was detected on State and Federal forests of central Idaho in 1972. This is the first report of this insect building up in Region 1 since a widespread outbreak in 1937-39. The western hemlock looper has the...
Resource Type:: Technical Report
Full Text:: ) • • U. S. DEPARTMENT OF AGRICULTURE DIVISION OF STATE AND PRIVATE FORESTRY /FOREST SERVICE NORTHERN

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

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

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An aerial survey during 1974 revealed approximately 5,000 acres of various degrees of Douglas-fir tussock moth, Orgyia pseudotsugata McD., defoliation in the lower Flathead Valley. An egg mass survey was made in September to determine the potential for damage in 1975. Based on new egg mass densities, significant defoliation may...
Resource Type:: Technical Report
Full Text:: ). 1/ Entomologists, USDA, Forest Service, State and Private Forestry, Missoula, Montana. 2

Creator:: Dewey, Jerald E., Kohler, Steve, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A western false hemlock looper, Neptyia freeman Munroe, outbreak was detected in the late summer of 1973 at the north end of Flathead Lake. Defoliation, from barely detectable to heavy (most foliage removed from upper half of trees), occurred on Douglas-fir over about 3,000 acres located between Somers and Kalispell,...
Resource Type:: Technical Report
Full Text:: Services, Division of State and Private Forestry, USDA Forest Service, Missoula, Montana. 2/ Entomologist

Creator:: Carlson, Clinton E., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: the Blackfoot highway. 1/ Plant pathologist, Division of State and Private Forestry, Missoula

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: Forest Service, Region 1, Division of State and Private Forestry, Missoula, Montana. 3/ Entomologist

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