Index Catalog // ScholarsArchive@OSU

Start Over

Filtering by: Creator United States. Forest Service. Northern Region. Forest Environmental Protection Subject Douglas fir -- Diseases and pests -- Montana

Potential for defoliation by western spruce budworm in Douglas-fir stands in eastern Montana, 1975

Creator:

Tunnock, Scott, United States. Forest Service. Northern Region. Forest Environmental Protection, and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

Aerially visible defoliation by the western spruce budworm, Choristoneura occidentalis Freeman, increased from 149,250 acres in 1973 to 649,319 acres in 1974 on five eastern Montana National Forests. An egg mass survey during the fall of 1974 predicted that additional defoliation will occur in 1975 on 47 of 48 plots...

Resource Type:

Technical Report

ScholarsArchive@OSU

Potential for defoliation by western spruce budworm in Douglas-fir stands in eastern Montana, 1975

Limit your search

Creator

Date

Decade

File Format

Language

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search