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Filtering by: Creator Dewey, Jerald E. Subject Report (United States. Forest Service. Northern Region. Insect and Disease Management)

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

Creator:

Dewey, Jerald E., Jenkins, Michael J., and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

Insect damage was extensive to Douglas-fir, ponderosa pine, western white pine, and western larch cones at most seed production areas surveyed in 1979. From 70 to 100 percent of the cones from several collecting periods were injured. Moderate damage (40-70 percent of cones injured) occurred to Douglas-fir, ponderosa pine, western...

Resource Type:

Technical Report
Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979

Creator:

Gibson, Kenneth E., McGregor, Mark D., Dewey, Jerald E., and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 in 1979. Our predictions for the future trend of the infestation, plus management alternatives to lessen its severity,...

Resource Type:

Technical Report
An evaluation of cone and seed insects in selected seed production areas in Region 1, progress report

Creator:

Dewey, Jerald E., Jenkins, Michael J., and United States. Forest Service. Northern Region. State & Private Forestry

Abstract:

An evaluation was made in 21 seed production areas and 1 seed orchard in Region 1 to identify the primary insect pests and to assess amount of injury caused. Cones from Douglas-fir, grand fir, western larch, lodgepole pine, ponderosa pine, and western white pine were collected periodically and examined. The...

Resource Type:

Technical Report

ScholarsArchive@OSU

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979

An evaluation of cone and seed insects in selected seed production areas in Region 1, progress report

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