The effect of the white-pine weevil (Pissodes strobi Peck) on white pine (Pinus strobus L) in southwestern Virginia

Thirteen white pine plots, ranging from 15-26 years of age and one tenth acre in size, were sampled in six counties of southwestern Virginia. The number of trees attacked by the white-pine weevil ranged from 3.5 percent to 98.6 percent with an average of 40.0 percent. The incidence of forking was found to be 4.1 percent of the trees weevi1ed. Enough trees in the dominant and co-dominant crOvffi categories were either free of weevil attacks or only attacked once that 250 to 300 trees are available for final harvest. Most of the weevil attacks occurred between 5 to 12 years of age. Analysis of Covariance for non-weevi1ed terminals and lateral lengths developed the following relationship for three age classes of terminals and laterals.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Entomology

Department dc:contributor.department

Entomology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1973

Author dc:creator

• Egan, Peter Joseph John

Chairs dc:contributor.committeechair

• Heikkenen, Herman John
• Grayson, James McD.

Committee member dc:contributor.committeemember

• Weidhaas, John A. Jr.

• white-pine weevil infestation

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Dc Identifier Other

etd-10032008-063027

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/44990