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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

Observations on the decline of western larch defoliated by larch casebearer in the northern region

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Numerous stands of western larch, Larix occidentalis, on the St. Joe, Coeur d'Alene, and Kaniksu National Forests, Idaho, show signs of gradual deterioration following repeated defoliation by larch casebearer, Coleophora Zaricella Hbn. (Tunnock et al. 1969). Stand deterioration can occur after 4 years of continued heavy defoliation. The main symptom...
Resource Type:: Technical Report
Full Text:: casebearer and other factors involved with deterioration of western larch stands in Northern Idaho. U. S

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

Parasite complex of the larch casebearer in Idaho and Montana progress report

Creator:: Niwa, Christine Gail, Hard, John S., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: No. • • • 9 3 PARASITE COMPLEX OF THE LARCH CASEBEARER IN IDAHO AND MONTANA Y1 0. Si- /5

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

Reevaluation of larch casebearer parasites in casebearer-infested stands of Region I

Creator:: Flavell, Thomas H. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The larch casebearer, Coleophora laricella (Hubner) was first reported attacking western larch, Larix occidentalis, in Idaho in 1957 (Denton, 1958), 71 years after its introduction into Massachusetts from Europe. The apparent successful regulation of this insect in the eastern U.S. by introduced parasites prompted biological control attempts in the West....
Resource Type:: Technical Report
Full Text:: , Coleophora laricella (Hubner) was first re- ported attacking western larch, Larix occidentalis, in Idaho in

Western larch resistance to Douglas-fir beetle attack

Creator:: Neal, Tiffany A.
Abstract:: Live western larch, Larix occidentalis Nutt., a tree species resistant to the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, produces the monoterpene 3-carene in higher concentrations compared to Douglas-fir, the preferred host of D. pseudotsugae (Reed et al. 1986). The inhibitory effects on attraction to aggregation pheromones and toxicity of 3-carene to...
Resource Type:: Masters Thesis
Full Text:: aggregation pheromones were used to stimulate ~ttack on mature, live western larch and Douglas-fir, as well

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

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

Observations on the decline of western larch defoliated by larch casebearer in the northern region

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

Parasite complex of the larch casebearer in Idaho and Montana progress report

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

Reevaluation of larch casebearer parasites in casebearer-infested stands of Region I

Western larch resistance to Douglas-fir beetle attack

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

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