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Western larch seed-contaminating fungi and treatments to reduce infection and improve germination

Creator:: James, Robert L., Dumroese, R. Kasten, Wenny, David Lee, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: . Western larch: pest-tolerant conifer of the Northern Rocky Mountains. In: Schmidt, • W. C. and K. J

Meria needlecast of western larch seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Needlecast caused by Meria laricis caused serious losses of 2-0 bareroot western larch during 1983 at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. Cool, wet weather throughout the spring and summer of 1983 was ideal for disease buildup and spread. Control attempts with fungicides were largely unsuccessful because of...
Resource Type:: Technical Report
Full Text:: . Plant Disease 68:826. Dubreuil, S. H. 1982. Western larch needle blight and needlecast in the N. Reg

Evaluation of fungicides to control Botrytis blight in western larch seedbeds at the Coeur d'Alene Nursery, Idaho

Creator:: James, Robert L., Woo, John You, Malone, P. L., and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Six fungicides were evaluated to control Botrytis blight of western 41 larch in seedbeds at the Coeur d'Alene Nursery. Fungicides were applied at biweekly intervals during the spring of 1982; test seedlings were inoculated with spores of B. cinerea twice during the evaluation period. Seedling mortality and height were recorded...
Resource Type:: Technical Report
Full Text:: Botrytis blight of containerized western larch and lodgepole pine at the Coeur d'Alene Nursery, Idaho. USDA

Containerized western larch seedling mortality, USDA Forest Service Nursery, Coeur D'Alene, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: , COUER D'ALENE, IDAHO S b I St MI • A-3 • R. L. James Plant Pathologist INTRODUCTION Western larch

Mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Causes of mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana, were investigated. Seedlings were rated for disease severity based on extent of foliar decline symptoms and fungal isolations made from their roots. Isolations were also made from selected larch seed. Consistent associations between root colonization...
Resource Type:: Technical Report
Full Text:: mortality. INTRODUCTION Western larch (Larix pccidentalis Nutt.) seedlings are an important crop, and

Fungicide tests to control Botrytis blight of containerized western larch at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L., Genz, Daryl, and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Five fungicides were evaluated to control Botrytis blight of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, MT. Fungicides were applied at biweekly intervals before and after seedling inoculation with Botrytis. Vinclozolin (Ornalin®) caused severe phytotoxicity to seedlings, resulting in enhanced mortality and premature needle loss. Captan and...
Resource Type:: Technical Report
Full Text:: fungicides can cause toxic reactions and reduce height of containerized western larch seedlings, even though

Fusarium root disease of western white pine seedlings at the Coeur d'Alene Nursery, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Root disease of 2-0 western white pine seedlings occurred at the Coeur d'Alene Nursery in 1982 within seedbeds fumigated with methyl bromide and chloropicrin. Although losses were not substantial, there were several groups of dead seedlings within affected seedbeds. Fusarium oxysporum was most often isolated from diseased roots. Other Fusarium...
Resource Type:: Technical Report
Full Text:: -111=1Eim Ash Sbit4-41- Ar3 vNa. 8 3 —ig • Report 83-19 FUSARIUM ROOT DISEASE OF WESTERN WHITE

Effects of topical application of the biological control agent Biotrek on production of bareroot Douglas-fir and western white pine seedlings, 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:: A preliminary evaluation of the biological control formulation of Trichoderma harzianum marketed as BioTrek® was conducted on bareroot Douglasfir and western white pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. The biocontrol material was applied topically on seed shortly after sowing and comparisons made between treated and...
Resource Type:: Technical Report
Full Text:: . Phytophthora root crown disease of western larch at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. USDA

Root diseases of western white pine transplants at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region
Abstract:: Mortality of western white pine transplants used to assess resistance to blister rust at the USDA Forest Service Nursery in Coeur d'Alene, Idaho was likely due to extensive root infection by Pythiva app. Severity of foliar symptom production was significantly correlated with extent of root system colonization by these fungi....
Resource Type:: Technical Report
Full Text:: SERVICE NURSERY, COEUR D'ALENE, IDAHO by R. L. James, Plant Pathologist and C. J. Gilligan, Biological

Containerized western white pine seedling mortality at the Bonners Ferry Ranger District, Idaho Panhandle National Forests

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Mortality of containerized western white pine seedlings outplanted on the Bonners Ferry Ranger District, Idaho Panhandle National Forests, was probably due to extensive root infection by Fusarium oxysporum. Diseased seedlings had chlorotic foliage, needle tip dieback, and severe twisting of the needles that indicated wilting. Most root tips of diseased...
Resource Type:: Technical Report
Full Text:: relatively high blister rust hazard in both northern Idaho and northwestern Montana. Several thousand

ScholarsArchive@OSU

Western larch seed-contaminating fungi and treatments to reduce infection and improve germination

Meria needlecast of western larch seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Evaluation of fungicides to control Botrytis blight in western larch seedbeds at the Coeur d'Alene Nursery, Idaho

Containerized western larch seedling mortality, USDA Forest Service Nursery, Coeur D'Alene, Idaho

Mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana

Fungicide tests to control Botrytis blight of containerized western larch at the Champion Timberlands Nursery, Plains, Montana

Fusarium root disease of western white pine seedlings at the Coeur d'Alene Nursery, Idaho

Effects of topical application of the biological control agent Biotrek on production of bareroot Douglas-fir and western white pine seedlings, USDA Forest Service Nursery, Coeur d'Alene, Idaho

Root diseases of western white pine transplants at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Containerized western white pine seedling mortality at the Bonners Ferry Ranger District, Idaho Panhandle National Forests

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