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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:: western larch seedlings at the Champion Timberlands Nursery, Plains, Montana, were investigated. Seedlings

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Report 87-11 October 1987 CONTAINERIZED WESTERN LARCH SEEDLING MORTALITY, USDA FOREST SERVICE NURSERY

Creator:: Niwa, Christine Gail, Hard, John S., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: insect has since spread throughout most of the range of western larch in Idaho, Montana, Washington

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:: 5230 October 1972 • OBSERVATIONS ON THE DECLINE OF WESTERN LARCH DEFOLIATED BY LARCH

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:: TiNGICIDE TESTS TO CONTROL BOTRYTIS BLIGHT OF CONTAINERIZED WESTERN LARCH AT THE CHAMPION TIMBERLANDS

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

Creator:: Merrill, L. M. and United States. Forest Service. Northern Region
Abstract:: Dwarf mistletoe is a serious problem on the Flathead Indian Reservation. Since the early 197o's, a procedure called thinning-sanitation has been applied to lightly infested stands. Evaluation of this procedure indicated that average dwarf mistletoe infection levels now range from 7 to 50 percent in larch and Douglas-fir treated 10...
Resource Type:: Technical Report
Full Text:: , western larch, and/or lodgepole pine host trees is infected with dwarf mistletoe (Arceuthobium spp

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

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