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Creator:: Tunnock, Scott, Kohler, Steve, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: In 1973, two centers of defoliation by Douglas-fir tussock moth totaling 350 acres were detected near Missoula, Montana. Egg mass surveys showed two sections south of Frenchtown and one section northwest of Lolo 41, contain sufficient egg mass population to cause heavy defoliation in 1974.
Resource Type:: Technical Report
Full Text:: . 74-2 January 1974 POTENTIAL FOR DEFOLIATION BY DOUGLAS-FIR TUSSOCK MOTH IN WESTERN MONTANA IN

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: September 1973 • • • • • • STATUS OF DOUGLAS-FIR TUSSOCK MOTH INFESTATIONS IN THE NORTHERN REGION

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The last outbreak of the Douglas-fir tussock moth, Hemerocampa pseudotsugata McD., in the Northern Region subsided in 1965. Tussock moth populations were not detected again until 1970 when ornamental spruce were defoliated in Spokane, Washington, and Poison and Missoula, Montana.
Resource Type:: Technical Report
Full Text:: -8 5220 October 1972 DETECTION SURVEY FOR DOUGLAS-FIR TUSSOCK MOTH INFESTATIONS IN THE

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Douglas-fir tussock moth egg mass studies during winter 1974 indicate that natural factors such as low egg viability, egg parasitism, and virus do not alter the potential for heavy defoliation in two sections south of Frenchtown and one section northwest of Lolo, Montana.
Resource Type:: Technical Report
Full Text:: No. 74-11 IMPACT OF EGG VIABILITY, EGG PARASITISM, AND VIRUS ON 1974 DOUGLAS-FIR TUSSOCK MOTH

Creator:: Tunnock, Scott, Livingston, R. Ladd, Bousfield, Wayne E., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: DOUGLAS-FIR TUSSOCK MOTH DEFOLIATION POTENTIAL IN NORTHERN IDAHO by Scott Tunnockli , R. L

Creator:: Tunnock, Scott, Ciesla, William M., Haglund, Steve, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A supplemental Douglas-fir tussock moth egg mass evaluation was made within three quarter sections north of Poison, Montana, during April 1975. These areas were being considered for a pilot control project of a nucleopolyhedrosis virus spray. Results from the April evaluation showed these areas no longer qualified as sites for...
Resource Type:: Technical Report
Full Text:: supplemental Douglas-fir tussock moth egg mass evaluation was made within three quarter sections north of

Creator:: Hamel, Dennis R., United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., has caused extensive tree mortality in the North Fork Clearwater River drainage since 1971. In 1974, survey estimates indicated a continued decline in the infestation. Average group size decreased from a high of 158 trees per group in 1971 to 17 in 1974. Average area...
Resource Type:: Technical Report
Full Text:: EVALUATION OF DOUGLAS-FIR BEETLE INFESTATIONS, NORTH FORK CLEARWATER RIVER DRAINAGE, IDAHO -- 1974 by D. R

Creator:: Tunnock, Scott, Flavell, Thomas H., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Aerial surveys of six Montana National Forests in 1975 found a 22.1% increase in the area of visible defoliation caused by the western spruce budworm. It is estimated that 2,278,804 acres of Douglas-fir forests are now suffering at least 25% defoliation. This is an increase of 503,706 acres over the...
Resource Type:: Technical Report
Full Text:: POTENTIAL FOR DEFOLIATION BY WESTERN SPRUCE BUDWORM IN DOUGLAS-FIR STANDS IN MONTANA - 1976 by 1/ 1/ 2

Creator:: Tunnock, Scott, McGregor, Mark D., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mortality from various causes was recorded in a Douglas-fir tussock moth, Orgyia pseudotsugata McD., outbreak southeast of Coeur d'Alene, Idaho, in 1974. Observations began June 27 when about 50 percent of the larvae were second instars and continued until pupation. Within a 35-day period, there was a 93 percent average...
Resource Type:: Technical Report
Full Text:: -FIR TUSSOCK MOTH INFESTATION IN NORTHERN IDAHO - 1974. By 0282917 1/ 2/ Scott Tunnock, M.D

Creator:: Tunnock, Scott, United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Aerially visible defoliation by the western spruce budworm, Choristoneura occidentalis Freeman, increased from 149,250 acres in 1973 to 649,319 acres in 1974 on five eastern Montana National Forests. An egg mass survey during the fall of 1974 predicted that additional defoliation will occur in 1975 on 47 of 48 plots...
Resource Type:: Technical Report
Full Text:: BUDWORM IN DOUGLAS-FIR STANDS IN EASTERN MONTANA 1975 by Scott Tunnockli , Mark McGregorli , Hubert

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