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Filtering by: Creator Livingston, R. Ladd Subject Douglas fir -- Diseases and pests -- Idaho

Douglas-fir tussock moth population surveys, northern Idaho and western Montana, 1983 and 1984

Creator:

Dewey, Jerald E., Livingston, R. Ladd, Kohler, Steve, and United States. Forest Service. Northern Region

Resource Type:

Technical Report
Douglas-fir tussock moth adult male survey north Idaho and western Montana, 1982

Creator:

Dewey, Jerald E., Livingston, R. Ladd, Kohler, Steve, and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management

Abstract:

Douglas-fir tussock moth populations are monitored annually in northern Idaho and western Montana to insure early detection of changes from endemic to outbreak population levels. Adult moth trapping in 1982 was intensified and expanded into additional areas from 1981 because of concern that with each passing year the probability of...

Resource Type:

Technical Report
Potential Douglas-fir tussock moth damage in northern Idaho in 1974 based on a 1973 fall egg mass survey

Creator:

Tunnock, Scott and Livingston, R. Ladd

Abstract:

An epidemic of Douglas-fir tussock moth was detected in northern Idaho in 1972. In 1973, aerial surveys showed that nearly 100,000 acres contained various degrees of visible defoliation. An egg mass survey of five reporting units made in the fall of 1973 determined potential for damage in 1974. Based on...

Resource Type:

Technical Report