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Friday, May 1, 2020 | History

4 edition of The Douglas-fir beetle found in the catalog.

The Douglas-fir beetle

William D. Bedard

The Douglas-fir beetle

  • 78 Want to read
  • 25 Currently reading

Published by U.S. Dept. of Agriculture in Washington, D.C .
Written in English

    Subjects:
  • Douglas fir beetle,
  • Douglas fir -- Diseases and pests

  • Edition Notes

    Caption title.

    Other titlesDouglas fir beetle.
    Statementby W.D. Bedard.
    SeriesCircular / United States Department of Agriculture -- no. 817, Circular (United States. Dept. of Agriculture) -- no. 817.
    The Physical Object
    Pagination10 p. :
    Number of Pages10
    ID Numbers
    Open LibraryOL13583619M
    OCLC/WorldCa17014864

      Several windthrow events in have paved the way for a potential outbreak of Douglas-fir beetle in areas of eastern Washington this spring (). The Douglas-fir beetle is a bark beetle that normally breeds in felled, injured, windthrown or root-diseased Douglas-fir. It may also attack western larch, but can only produce brood in downed trees.. repelling Douglas fir beetle, Dendroctonus pseudotsugae, and preventing the infestation of trees by Douglas fir beetle. MCH has been used operationally in the Pacific Northwest and Rocky Mountains since to protect high-valued trees and stands from Douglas fir beetle infestation. MCH is.


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The Douglas-fir beetle by William D. Bedard Download PDF EPUB FB2

Douglas-fir beetle (Dendroctonus pseudotsugae), another close relative of the spruce beetle and mountain pine beetle, is an important native bark beetle of mature Douglas-fir (Pseudotsuga menziesii) forests across most of the aks tend to be associated with mature Douglas-fir forests (average stand diameters greater than 14 inches at feet from the forest floor) coupled with.

QUICK GUIDE SERIES FM Douglas-fir Beetle About Douglas-fir Beetle Douglas-fir beetle (Dendroctonus pseudotsugae) is the most destructive bark beetle of mature Douglas-fir forests in western North America.

It is a native insect found throughout the range of its only host tree, Douglas-fir, from southern Canada to northern Size: KB. Douglas -fir Beetle Richard F.

Schmitz and Kenneth E. Gibson The Douglas-fir beetle (Dendroctonus pseudotsuqae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States British Columbia and Mexico.

Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in stand-File Size: KB. The Douglas-fir beetle (Dendroctonus pseudotsugae) is the principal killer of mature Douglas-fir in usually attacks weakened or dying trees, but occasionally its populations increase to the extent that it infests and kills large numbers of healthy trees.

Host: Douglas-fir Figure Egg and larval galleries of Douglas-fir beetle. Note larval galleries occur in alternating groups. Symptoms/Signs: Reddish-orange frass is the first sign that a tree has been attacked. At times, the most evident sign of attack is the clear resin exuding from entrance holes on the upper portions of the stem.

Forest Insect and Disease Identification and Management Training Manual, USDA, Forest Service, R-1, Timber, Coop. Forestry and Pest Management, Idaho Department of Lands, Bureau of Private Forestry - Insect and Disease Section, Montana Department of State Lands, Division of Forestry Douglas-fir beetle is the most destructive bark beetle attacking Douglas-fir in the Northern Region.

Forest Health Fact Sheet March Both Douglas-fir pole beetle and Douglas-fir engraver* beetle are distributed across most of the range of Douglas-fir.

*Douglas-fir engraver beetle is distinct from a related, although potentially more damaging, species that attacks true fir. Douglas-Fir Beetle Biological Control. Dendroctonus pseudotsugae Hopkins. From: Bellows, Thomas S.,Carol Meisenbacher, and Richard C. Reardon,Biological Control of Arthropod Forest Pests of the Western United States: A Review and Recommendations, USDA, FS, FHTET Origin: North America.

Range in North America: Throughout the range of Pseudotsuga menziesii in western North. The Douglas-fir beetle appears to occur in two situations: apparently healthy, large-diameter, host stands where isolated, infested dead-tree groups increase to several to a few dozen trees over a few years and then decrease; and in seriously stressed stands such as those suffering from insect defoliation or exposure to fire that did not ruin the phloem tissue.

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Douglas-fir beetle definition is - a bark beetle (Dendroctonus pseudotsugae) that is very destructive to Douglas fir and sometimes to western larch. Dendroctonus pseudotsugae, the Douglas-fir beetle, is a species of bark beetle found in western North America.

Three subspecies exist that correspond to the subspecies of beetles also infest downed Larch trees. Outbreaks often occur in conjunction with drought, root rot diseases, overcrowding, damage by insects that damage foliage, and environmental : Curculionidae.

The Douglas-fir beetle (Dendroctonus pseudotsuqae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States British Columbia and Mexico. Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in standing larch are always unsuccessful, while those in freshly felled larch are usually successful and brood emergence is Cited by: MCH bubble caps can be used to help prevent attack of: Douglas fir beetle (Dendroctonus pseudotsugae) and Spruce beetle (Dendroctonus rufipennis) MCH can be deployed on Douglas-fir and Spruce trees.

It is suitable to use in stands containing significant numbers of trees whether standing, fallen or stumped. The Douglas-fir beetle prefers felled trees, slash, stumps, and windfall as well as trees that have been damaged or stressed by factors such as the urban environ-ment, defoliators, or root disease.

Adult Douglas-fir beetles are small, 4—7 mm, cylindrical, and usually brown or black. They bore into the bark of trees and lay eggs in galleriesFile Size: 1MB.

Several insects attack Douglas-fir, but the Douglas-fir beetle is the most important. Outbreaks usually occur in windthrown, fire-killed or felled timber.

Timber in any of the conditions listed should be removed as quickly as possible. Periodic outbreaks of Douglas-fir tussock moths may cause serious damage. Forest Insect & Disease Leaflet 5 Revised February U.S.

Department of Agriculture • Forest Service Douglas-fir Beetle Malcolm M. Furniss1 and Sandra J. Kegley2 1Principal Entomologist and Project Leader (retired), Forestry Sciences Laboratory, USDA Forest Service, Moscow, ID; 2Forest Entomologist, USDA Forest Service, Forest Health Protection, Northern Region, Coeur d’Alene, ID.

Effectiveness of Douglas-fir beetle antiaggregative pheromone applied by helicopter. Ogden, Utah: U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, (OCoLC) The adult is a stout, brown to blackish-brown beetle with reddish elytra, 4 to 7 mm long.

The duration of the life cycle is approximately 1 year and two broods may be produced each year. The Douglas-fir beetle overwinters primarily as young adults or as mature or nearly mature larvae.

MCH for Douglas-fir beetle. Methyl-cyclo-hexanone (MCH) works against Douglas-fir beetle only. Apply by April 15 th. Earlier applications of MCH may dry out prior to beetle flight, so try to hang as close to this date as possible.

Read the pesticide label and use the proper personal protective equipment. Douglas-Fir Beetle AskedPM EDT Good morning, I recently brought two and a half chords of freshly cut Doug Fir from Yamhill County to my house in Washington County. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) were monitored for 4 years following three wildfires.

Logistic regression analyses were used to develop models predicting the probability of attack by Douglas-fir beetle (Dendroctonus pseudotugae Hopkins, ) and the probability of Douglas-fir mortality within 4 year following fire.

Percent crown volume scorched (crown scorch), cambium Cited by: Predicting post-fire Douglas-fir beetle attacks and tree mortality in the Northern Rocky Mountains.

Canadian Journal of Forest Research. We also developed a guide to predicting post-fire Douglas-fir mortality and Douglas-fir beetle attacks. It is a two-part GTR. The galleries of the Douglas-fir engraver beetles (fig.1) can be distinguished from the galleries of Douglas-fir pole beetle (fig.

2) by the well-defined nuptial chamber made by engraver beetles. Larval galleries tend to turn upward and downward depend-ing on if they are above or below the notch.

Douglas-fir pole beetle adults overwinter in nichesFile Size: KB. Douglas-fir and occasionally western larch. Economic Importance: DFB is the most important bark beetle enemy of Douglas-fir throughout its range. This insect normally breeds in slash, windfall and diseased trees, but at times the DFB becomes epidemic and kills apparently healthy trees over extensive areas.

References and Links. Progress 01/01/03 to 12/31/03 Outputs A manuscript describing the validation of a Douglas-fir beetle hazard rating system was accepted for publication in the Western Journal of Applied Forestry. A multi-year, large scale study to test mass trapping for the Douglas-fir beetle was completed in The results were inconclusive.

reddish bark dust in bark crevices is a sign of the Douglas-fir beetle (Photo: Elizabeth Willhite, ) Healthy trees can withstand a low-level Douglas-fir beetle attack, and in normal circumstances there are rarely enough beetles around to cause concern.

This video covers diagnosis of bark beetles specific to Douglas-fir and true fir and is part of a 3-part bark beetle series that includes an introduction to diagnosis of bark beetles and diagnosis. Synergy Shield MCH Bubble Caps, Douglas-fir Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect trees from attack by Spruce, and Douglas-fir beetles.

Active Ingredients: 3-methylcyclohexenone % ( mg). DÉSIRÉE VANDERWEL, A. CAMERON OEHLSCHLAGER, in Pheromone Biochemistry, A Sequestration of Host Compounds.

Both sexes of the Douglas-fir beetle, Dendroctonus pseudotsugae, release limonene with their aggregation pheromones when stimulated by acoustic signals from the opposite sex (Rudinsky et al., ).Limonene, a major constituent of Douglas-fir oleoresin, acts.

This book tries to provide the debaters with scientific data. Many foresters see Douglas-fir as the perfect replacement for Norway spruce which has been suffering from drought stress and bark beetle outbreaks in recent : Jakob Derks.

Using MCH to protect trees and stands from Douglas-fir beetle infestation (FHTET) [Ross, Darrell W] on *FREE* shipping on qualifying offers.

Using MCH to protect trees and stands from Douglas-fir beetle infestation (FHTET)Author: Darrell W Ross. Douglas-fir, but will kill large areas of healthy timber during epidemics. Usually has a one-year life cycle.

Overwintering adults emerge from April to July. Overwintering larvae mature and emerge as adults in July and August. Adults are dark brown to black with reddish wing covers and are to mm long. Adults carry spores of a blue-stain. Buy Summary of thirty years of field testing of MCH: Antiaggregation pheromone of the spruce bark beetle and the Douglas-fir beetle (Technical report R10).

Douglas-fir beetle-infested acres were also down to ab new acres observed, but that could change after the fires. “This one is also down at background levels,” Gannon said. Douglas-fir Beetle management Chapter Recognizing Douglas-fir beetle attacks.

Orange-brown boring dust is evidence of Douglas-fir beetle. Evidence that a tree has been successfully attacked is orange-brown boring dust found in bark crevices on the lower portion of the tree's bole or on the ground at its base.

Wind and rain may remove theFile Size: 1MB. Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., is the most serious bark beetle enemy of Douglas-fir, Pseudotsuga menziesii (Mirb.) Franco, in the Northern Rocky Mountain Region.

Past out-breaks have been attributed to catastrophic disturbances such as windthrow, trees damaged by snow and ice, and stressed by drought. book by douglas fir.

pine book. whos praying for the preacher. Assessing Post-fire Douglas-fir Mortality and Douglas-fir Beetle.

Douglas-fir has life history traits that greatly enhance resistance to injury from fire, thereby increasing post-fire survival rates. Tools for predicting the probability of tree mortality following fire are Author: Douglas Fir. Unlike the Douglas-fir beetle (Dendroctonus pseudotsugae), which results in the crown of large diameter trees turning from green to red all at once, the species causing this damage produces a patchy pattern of red branches throughout the crown.

As drought conditions persist, other bark beetle and wood borer species populations are also increasing. The Douglas fir beetle is a bark beetle that normally breeds in felled, injured, windthrown and root-diseased Douglas fir.

It may also attack western larch but can only produce its brood in downed trees. At outbreak levels, this bark beetle can attack and kill large diameter, healthy Douglas fir trees.

Cylindrocopturus furnissi. Pest description and damage The Douglas-fir twig weevil is a small, wingless, grayish-black beetle with white markings and sometimes pinkish spots.

The larvae mine under the bark or inside twigs. Infested twigs and small branches often turn a reddish-brown and die back.Douglas-fir beetle brood densities and infestation trends on a New Mexico study / (Fort Collins, Colo.: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S.

Dept. of Agriculture, ), by John F. Chansler and Colo.) Rocky Mountain Forest and Range Experiment Station (Fort Collins (page images at HathiTrust).Douglas-fir beetle populations were monitored before and after thinning and felling of trees to create down wood in an year-old Douglas-fir plantation in the Oregon Coast Range.