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Filtering by: Publisher Washington : U.S. Dept of Agriculture Remove constraint Publisher: Washington : U.S. Dept of Agriculture Creator United States. Forest Service. Northern Region Remove constraint Creator: United States. Forest Service. Northern Region Decade 2000-2009 Remove constraint Decade: 2000-2009

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Cone and seed insects and their impact on whitebark pine

Creator:

Kegley, Sandy, United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Whitebark pine, Pinus albicaulis Engelm. is an important but declining high-elevation tree species in western forests. Regeneration of this species has been difficult and the impact of cone and seed insects unknown. Seven sites selected from the geographical range of whitebark pine in Idaho, Montana, Washington, Oregon, and California were...

Resource Type:

Technical Report

Full Text:

biological and cultural factors such as poor germination rates, United States Department of Agriculture
Forest health assessment of whitebark pine on Pyramid Pass, Russell Mountain, and Burton Ridge in the Selkirk Mountains on the Idaho Panhandle National Forests

Creator:

Kegley, Sandy, Schwandt, John W., Gibson, Kenneth E., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Resource Type:

Technical Report

Full Text:

. United States Department of Agriculture Forest Service Northern Region 200 East Broadway P.O. Box 7669
Effects of spring applications of dazomet on root diseases and performance of Douglas-fir and western white pine transplants, USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:

James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Tests were conducted at the USDA Forest Service Nursery, Coeur d'Alene, Idaho to evaluate effectiveness of spring fumigation with dazomet to improve survival and performance of Douglas-fir and western white pine transplants. Spring fumigation greatly reduced populations of potentially pathogenic Fusarium and Pythium spp. Disease levels of container (plug+1) and...

Resource Type:

Technical Report

Full Text:

seedlings produced in • United States Department of Agriculture Forest Service 200 East Broadway P.O
Effects of dry heat treatment of styroblock containers on colonization by selected fungi

Creator:

James, Robert L., Trent, Andy, and United States. Forest Service. Northern Region

Abstract:

Tests were conducted to evaluate efficacy of dry heat (82.2°C for 10, 20, and 60 minutes) to reduce colonization by selected fungi within styroblock containers and residual seedling roots left in containers after seedling extraction. Dry heat alone was generally ineffective in significantly reducing fungal colonization. However, simply wetting container...

Resource Type:

Technical Report

Full Text:

April 2002 EFFECTS OF DRY HEAT TREATMENT OF STYROBLOCK CONTAINERS ON COLONIZATION BY SELECTED FUNGI R
Effects of a 2-year fallow period on soil populations of Fusarium, Trichoderma and Pythium species after incorporating corn plant residues : USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:

James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Soil in Field 2 at the USDA Forest Service Nursery, Coeur d'Alene, Idaho was assayed six times over a 2-year fallow period for potentially pathogenic Fusarium and Pythium spp. following incorporation of a corn cover/green manure crop. Populations of potentially disease-antagonistic Trichoderma spp. were also assayed. Soil populations of Fusarium...

Resource Type:

Technical Report

Full Text:

of Agriculture Forest Service Northern Region 200 East Broadway P.O. Box 7669 Missoula, MT
Douglas-fir tussock moth biological evaluation, Palouse Ranger District, Clearwater National Forest, 2001

Creator:

Randall, Carol and United States. Forest Service. Northern Region

Resource Type:

Technical Report

Full Text:

. United States Department of Agriculture Forest Service imams* Depaiwt Nortlithlif•Pactimeal 200 East
Pathogenic characteristics of Fusarium acuminatum isolated from inland Pacific Northwest nurseries

Creator:

James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Thirty-three isolates of Fusarium acuminatum obtained from inland Pacific Northwest forest nurseries were tested for their pathogenicity on young Douglas-fir germinants under controlled laboratory conditions. Tested isolates were from forest nursery soil, roots of healthy-appearing and diseased conifer seedlings, Styrofoam and hard plastic containers, conifer seeds, 411 and adult fungus...

Resource Type:

Technical Report

Full Text:

CHARACTERISTICS OF FUSARIUM ACUMINATUM ISOLATED FROM INLAND PACIFIC NORTHWEST NURSERIES R.L. James Plant
Pathogenic characteristics of Fusarium solani isolated from inland Pacific Northwest forest nurseries

Creator:

James, Robert L., Perez, R., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Forty-seven isolates of Fusarium solani obtained from the roots of diseased and healthy conifer seedlings and forest nursery soil were tested for pathogenicity on young Douglas-fir germinants under controlled laboratory conditions. Isolate virulence varied widely; a few were highly virulent whereas many were classified as non-pathogenic. Isolates from the roots...

Resource Type:

Technical Report

Full Text:

United States Department of Agriculture 200 East Broadway P.O. Box
Investigations of tree health at the Potlatch Corporation Cherrylane Seed Orchard, Idaho

Creator:

James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Investigations were conducted from 1998- 2000 at the Potlatch Corporation's Cherrylane Seed Orchard near Lewiston, Idaho to evaluate presence and extent of potentially pathogenic fungi on roots of diseased stock and within the soil in current and proposed plantation sites. The most common group of pathogens encountered was Fusarium spp.;...

Resource Type:

Technical Report

Full Text:

of affected trees as well as foliage samples were submitted to a diagnostic laboratory in Washington
Effects of radio frequency waves on fungal colonization of styroblock containers

Creator:

James, Robert L., Trent, Andy, United States. Forest Health Protection, and United States. Forest Service. Northern Region

Abstract:

Fungal pathogens tend to accumulate within styroblock containers, which are reused to produce successive crops of container-grown seedlings. Most nurseries treat reused containers by immersing them in hot water for varying time periods. The efficacy of radio frequency waves (RFs) to reduce levels of selected groups of fungi within styroblock...

Resource Type:

Technical Report

Full Text:

Department of Agriculture Forest Service Northern Region 200 East Broadway P.O. Box 7669 Missoula, MT

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Creator

United States. Forest Service. Northern Region[remove]24
United States. Forest Health Protection22
James, Robert L.11
Kegley, Sandy4
Randall, Carol4
more Creators »

Date

Date range begin – Date range end

Current results range from 2000 to 2002

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Decade

2000-2009[remove]24

File Format

application/pdf24

Language

English [eng]24

Resource Type

Technical Report24

Rights Statement

Copyright Not Evaluated24

Subject

Conifers -- Diseases and pests -- Northwest, Pacific2
Douglas fir -- Diseases and pests -- Idaho2
Douglas fir beetle -- Idaho2
Douglas fir tussock moth -- Biological control -- Idaho -- Clearwater National Forest2
Fusarium diseases of plants -- Control2
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