1 edition of Commercial thinning of mature lodgepole pine to reduce susceptibility to mountain pine beetle found in the catalog.
Canada-British Columbia Partnership Agreement on Forest Resource Development: FRDA II.Co-published by British Columbia Ministry of Forests.Issued in collaboration with: Forest Engineering Research Institute of Canada.Includes bibliographical references: p. 19.Also issued online.
|Statement||Canadian Forest Service|
|Publishers||Canadian Forest Service|
|The Physical Object|
|Pagination||xvi, 57 p. :|
|Number of Pages||49|
|2||Special report (Forest Engineering Research Institute of Canada) -- no. SR-94.|
|3||FERIC special report ;$vno. SR-94|
nodata File Size: 6MB.
In Proceedings, Symposium on Management of Lodgepole Pine Ecosystems, October 9-11, 1973. ponderosae attacks in whitebark pine Pinus albicaulis Engelm. Other insects that can be damaging local pests are the lodgepole terminal weevil Pissodes terminaliswhich can be destructive to elongating terminal leaders; larvae of the Warren's collar weevil Hylobius warreniwhich girdles roots and the root collar; larvae of the weevil Magdalis gentilis, which mine branches; various sucking insects, such as the pine needle scale Chionaspis pinifoliaethe black pineleaf scale Nuculaspis californicaand the spruce spider mite Oligonychus ununguis ; and several defoliating insects, among which are the lodgepole sawfly Neodiprion burkeithe lodgepole needle miner Coleotechnites millerithe sugar pine tortrix Choristoneura lambertianathe pine tube moth Argyrotaenia pinatubanaand the pandora moth Coloradia pandora 7.
Cones are persistent, and serotinous closed cones accumulate for decades. ponderosae infestations without the problems associated with trap trees.
However, we speculate that baited traps may possibly trap beetles over a longer period than baited trees, because traps do not trigger release of antiaggregation pheromone as do attacked trees. Where canopy density was reduced, ether by us or by the insects, surviving trees significantly increased their resistance to attack over a 3-yr period. Theory of the relationships between oxidant injury and bark beetle infestation. The importance of lodgepole pine in the United States.
Lodgepole pine is a component in 27 of the 55 SAF western forest cover types. Rocky Mountain Forest and Range Experiment Station, Fort Collins, CO. The persistent cones are hard and heavy, with protuberant scales. Young, succulent seedlings may die because of high soil surface temperatures 13.
Open stars indicate traps baited with four-component D. Hosts: All pines except Jeffrey pine are hosts. Cones are produced regularly from an early age and often are serotinous. There is also potential for significant genetic gains from selection of elite trees when thinning.
When population levels are low, mountain pine beetles breed in severely stressed trees such as those damaged by lightning, wind, fire, other insects, or disease.
Adult beetles carry with them the spores of blue-staining fungi both on their bodies and in special structures on their heads called mycangia.
Poor sites and overstocked stands particularly must be thinned as early as age 10.
Intermountain Forest and Range Experiment Station, Ogden, UT.
Complete seed crop failures have occurred at 2800 m 9,200 ft in northwest Wyoming for 2 to 4 years in a row 42.