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Creator:: Flavell, Thomas H., Tunnock, Scott, Drake, L. E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Aerial and ground surveys to detect and evaluate forest insect and disease conditions in North Dakota were made during June 1977 by personnel from the U.S. Forest Service, Forest Insect and Disease Management staff and the Rocky Mountain Forest and Range Experiment Station. A forest tent caterpillar outbreak in the...
Resource Type:: Technical Report
Full Text:: to detect and evaluate forest insect and disease conditions in North Dakota were made during June

Creator:: Tunnock, Scott, Stein, John D., Tagestad, Arden, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An active infestation of ash borer, Podosesia syringae (Harris) was detected in green ash, Fraxinus pennsylvanica Marsh, surrounding the Bowman-Haley Reservoir in 1973. A survey in 1974 showed that 40.4 percent of 690 trees examined contained active ash borer attacks. Forty-three out of 140 windbreaks were sampled and each one...
Resource Type:: Technical Report
Full Text:: WINDBREAKS SURROUNDING THE BOWMAN-HALEY RESERVOIR IN NORTH DAKOTA, SPRING 1974 by Scott Tunnock, John D

Creator:: Flavell, Thomas H., United States. Forest Service. Northern Region. Forest Insect and Disease Management, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Green ash windbreaks in North Dakota were surveyed in 1972 and 1976 to determine the incidence of attacks by the carpenterworm, ash borer, and other stem-infesting wood borers. Windbreaks were stratified by age and geographic region. In 1976, about 3.1 percent of the green ash trees in North Dakota had...
Resource Type:: Technical Report
Full Text:: IN GREEN ASH WINDBREAKS IN NORTH DAKOTA By Thomas H. Flavell 1/, Arden Tagestad, Susan Sladek 2

Creator:: Tunnock, Scott, Tagestad, Arden, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An evaluation was made during midsummer 1972 to measure damage by the carpenterworm, Prionoxystus robiniae, and the ash borer, Podosesia syringae, to green ash in windbreaks in North Dakota. Intensity of infestation was determined in four land resource areas and four age classes of windbreaks. Of the 96 windbreaks examined...
Resource Type:: Technical Report
Full Text:: A3 no 73-5 IN 4 ASH WINDBREAK PLANTINGS IN NORTH DAKOTA 0 0 • 0 0 0 U. S. DEPARTMENT OF

Creator:: Dooling, Oscar J. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A survey to determine distribution and intensity of cankers and associated damage in North Dakota windbreak plantings of Russian-olive and Siberian elm was conducted in 1972. Four hundred and thirty-five (76 percent) of 574 Russian-olive examined had cankers, and 552 (72 percent) of 769 Siberian elm examined had cankers. Cankers...
Resource Type:: Technical Report
Full Text:: Report No. 73-10 5200 April 1973 0 CANKERS IN NORTH DAKOTA WINDBREAK PLANTINGS SURVEY AND

Creator:: Hard, John S. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 1. Defoliation by cankerworms in 1979 was significantly less in 1978 treated shelterbelts than in untreated shelterbelts. 2. Most shelterbelts treated in 1978 retained enough foliage by late June 1979 so that adjacent crops were protected from wind. 3. Aerially applied Bt at a rate of 1/2 lb./acre provided shelterbelt...
Resource Type:: Technical Report
Full Text:: cankerworm 1/ infested shelterbelts near Bismarck, North Dakota, in May 1978 (Hard, et al. 1979). Defoliation

Creator:: Tunnock, Scott, Hard, John S., Karch, Tom, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The forest tent caterpillar, Malacosoma disstria Hbn., began defoliating trembling aspen stands, Populus tremuloides Michx., in 1976 in the Turtle Mountains of North Dakota. Heavy defoliation was scattered through about 150,000 acres in 1978. Pupal mortality from parasites and disease was almost 100 percent in cocoons on understory shrubs and...
Resource Type:: Technical Report
Full Text:: December 1978 POTENTIAL DEFOLIATION BY THE FOREST TENT CATERPILLAR IN THE TURTLE MOUNTAINS, NORTH DAKOTA

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A looper, probably the Bruce spanworm, Operophtera bruceata (Hulst), defoliated more than 15,650 acres of quaking aspen in the Turtle Mountains of North Dakota in the spring of 1973.
Resource Type:: Technical Report

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: • • • Fusarium root diseases cause problems in conifer seedling production seedbeds at the North Dakota Forest

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Five seedlots of Colorado blue spruce and three seedlots of Black Hills spruce were sampled for Fusarium contamination. All seedlots contained some seed and/or debris with Fusarium. Levels of contamination were greatly reduced by treating seed with running water rinses for 48 hours or with chemical sterilants such as sodium...
Resource Type:: Technical Report
Full Text:: for pathogen contamination. Growers at the North Dakota Forest Service Nursery in Towner were

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