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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:: • INTRODUCTION Numerous stands of western larch, Larix occidentalis, on the St. Joe, • Coeur d'Alene, and

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

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

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:: . Figure 1.--Containerized western larch seedlings with chlorotic and necrotic foliage associated with root

What's wrong with my potato tubers?: diagnosing tuber abnormalities in western Oregon and Washington

Creator:: Selman, Lane, Andrews, Nick, Stone, Alex, Mosley, Al, and Oregon State University. Extension Service
Abstract:: This bulletin is one of a series on organic potato production developed by “OSPUD.” OSPUD is a collaboration among Oregon State University personnel and 11 farmers operating diversified organic vegetable farms. The purpose of OSPUD is to improve potato quality and profitability through a participatory learning process and on-farm, farmer-directed...
Resource Type:: Technical Report
Full Text:: Abnormalities in Western Oregon and Washington, EM 8948-E (Oregon State University Extension Service) This

Evaluation of larch casebearer parasites on the Flathead National Forest, Montana, 1985

Creator:: Tunnock, Scott, Bousfield, Wayne E., and United States. Forest Service. Northern Region
Abstract:: An evaluation during the summer of 1985 showed that parasites were still exerting control on the larch casebearer on the Flathead NF. Parasitism ranged from 4 to 60 percent and averaged 25.2 percent in the 12 areas surveyed. Four species of parasites were involved. The most abundant was Agathis pumila...
Resource Type:: Technical Report
Full Text:: the larch casebearer parasite, Mathis pumila, in Idaho, Montana, Washington, Oregon, and British

Dwarf mistletoe loss assessment on the Flathead and Kootenai National Forests, Montana

Creator:: Dooling, Oscar J., Eder, Robert G., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: for dwarf mistletoe In Douglas-fir (DF), western larch (WL), and lodgepole pine (LP) on the Flathead

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: The attack spatial pattern of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins was shown to be regular within a given subarea of bark on its host, Pseudotsugae menziesii (Mirb.) Franco. Empirical arguments were advanced which indicated the uniform spacing of attacks was the result of a beetle controlled spacing mechanism dependent...
Resource Type:: Technical Report
Full Text:: has been documented for several species (Barris and Perry 1971, Livingston and Berryman 1972). Since

The analysis of the attack distribution of an endemic Douglas-fir beetle population

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Felled second-growth Douglas-fir trees in western Washington were used to determine the attack distribution and develop a sampling technique for an endemic Douglas-fir beetle, Dendroctonue peeudotaugae Hopk. (Coleoptera: Scolytidae) population. The attack density varied by circumferential position. The lowest density was on the upper bole and the highest on one...
Resource Type:: Technical Report
Full Text:: western Washington were used to determine the attack distribution and develop a sampling technique for an

Impacts of dwarf mistletoe on the physiology of host Tsuga heterophylla trees as recorded in tree ring C and O stable isotopes

Creator:: Marias, Danielle E.
Abstract:: Dwarf mistletoes, obligate, parasitic plants with diminutive aerial shoots, have long-term effects on host tree water relations, hydraulic architecture, and photosynthetic gas exchange and can eventually lead to tree death. To investigate the long-term impacts of dwarf mistletoe on gas exchange of host western hemlock trees, I compared growth, gas...
Resource Type:: Masters Thesis
Full Text:: southwestern Washington (Meinzer et al., 2004) while infected Douglas-fir and infected western larch in the

ScholarsArchive@OSU

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

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

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

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

What's wrong with my potato tubers?: diagnosing tuber abnormalities in western Oregon and Washington

Evaluation of larch casebearer parasites on the Flathead National Forest, Montana, 1985

Dwarf mistletoe loss assessment on the Flathead and Kootenai National Forests, Montana

The analysis of the spatial attack pattern of an endemic Douglas-fir beetle population

The analysis of the attack distribution of an endemic Douglas-fir beetle population

Impacts of dwarf mistletoe on the physiology of host Tsuga heterophylla trees as recorded in tree ring C and O stable isotopes

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