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

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An evaluation of cone and seed insects in sel ...
Jerald E. Dewey
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Last edited by Open Library Bot
December 3, 2010 | History

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

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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 primary insect species observed were western spruce budworm on Douglas-fir, grand fir, and western larch; midges on Douglas fir, grand fir, western larch, ponderosa pine, and lodgepole pine; coneworms on Douglas-fir, grand fir, western larch, and ponderosa pine; and the Douglas-fir cone moth on Douglas-fir.

Publish Date
Language
English
Pages
18

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Book Details


Edition Notes

"June 1979."

Includes bibliographical references.

Also issued online.

Published in
Missoula, Mont
Series
Forest insect & disease management, Forest insect and disease management report -- no. 79-16., Report (United States. Forest Service. Northern Region) -- no. 79-16.

The Physical Object

Pagination
18 p. :
Number of pages
18

ID Numbers

Open Library
OL16139998M

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Download catalog record: RDF / JSON
December 3, 2010 Edited by Open Library Bot Added subjects from MARC records.
December 10, 2009 Created by WorkBot add works page