Controlling Light in Small Clearcuttings
Controlling Light in Small Clearcuttings

Author: David A. Marquis

Publisher:

Published: 1965

Total Pages: 20

ISBN-13:

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S2In 1960, a study was made of the patterns of sunlight and shade in small clearcuttings. This report illustrates some of the patterns and suggests how such cuttings might be done for regeneration purposes.S3.

Organism Interactions in Decay and Discoloration in Beech, Birch, and Maple
Organism Interactions in Decay and Discoloration in Beech, Birch, and Maple

Author: Alex L. Shigo

Publisher:

Published: 1965

Total Pages: 28

ISBN-13:

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S2The purpose of this paper is to point out some of these interactions and to illustrate that bacteria, non-hymenomycetes, and hymenomycetes are all important in the processes that lead to decay and discoloration in beech, birch, and maple. Data from several studies are summarized.S3.

Improvement in Butt-log Grade with Increase in Tree Size, for Six Hardwood Species
Improvement in Butt-log Grade with Increase in Tree Size, for Six Hardwood Species

Author: George R. Trimble (Jr.)

Publisher:

Published: 1965

Total Pages: 536

ISBN-13:

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S2Work carried out by the Northeastern Forest Experiment Station in West Virginia in the past 12 years provides useful information about the relationships between tree d.b.h. and butt-log grade. The upper logs are not included in the relationships. Being smaller and containing more knots, these upper logs are generally of lower grade than the butt logs. Thus the average grade of all material in the sawlog portion of the tree is generally lower than the average grade of the butt log. In the West Virginia data, species differences in d.b.h.-grade relationship are readily apparent. This inherent tendency for species to have different proportions of the various grades in logs of the same size is a familiar phenomenon to grade-conscious foresters who work with hardwoods. The results in this paper provide a quantitative evaluation of this tendency for six of the local species.S3.