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United States. Forest Service. Northern Region. State & Private Forestry
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91. [Article] Evaluation of a weevil infestation in thinned lodgepole pine stands, Lewis and Clark National Forest, Montana
An infestation of a defoliating weevil, Magdalis gentilis LeConte, was reported in July by Hank Manning, Judith Ranger District forester, Lewis and Clark National Forest. The infestation occurs in precommercially thinned ...Citation -
92. [Article] Evaluation of proposed dwarf mistletoe management projects on the Deerlodge National Forest
Residual lodgepole pine in older clearcuts are dwarf mistletoe-infected and pose a threat to regeneration present. Removal of these residuals coupled with planned or completed precommercial thinnings will ...Citation -
Ground surveys on the Hungry Horse District indicate a potential for mountain pine beetle infestation in lodgepole pine. Based on elevation-latitude, mean d.b.h. and phloem thickness, and age, stands were ...
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A needle miner, Coleotechnites sp., defoliated approximately 3,100 acres of ponderosa pine, Pinus ponderosa Laws. on the Flathead Indian Reservation, Montana, during 1978. Three other small areas in the Missoula ...
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95. [Article] Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979
The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 ...Citation -
96. [Article] Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands
Methods used to establish permanent plots in precommercially thinned and unthinned stands to monitor root disease development are described. Plots were established in 22 Armillaria-infested stands in northern ...Citation -
97. [Article] Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979
Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate ...Citation -
Mountain pine beetle infestations have increased in second-growth ponderosa pine stands in the Garnet Mountains since 1971. The extremely dry 1973 season resulted in an increase of Ips engraver beetle ...
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99. [Article] Evaluation of pruning to reduce impact of white pine blister rust on selected areas in Yellowstone National Park
White pine blister rust still poses a threat to the relic limber pine stand in the Mammoth Hot Springs Terrace area; pruning of cankers is an effective means of preserving the limber pine as long as po...Citation -
100. [Article] Supplemental egg mass data from a Douglas-fir tussock moth infestation, North of Polson, Montana, April 1975
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 ...Citation