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USFS Logo Research Data Archive
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A graph depicting 30-year net production in MUs 90 through 93 after different treatments applied in the Cutting Practice Level Study
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU90
MU91
MU92
MU93
Cutting Practice Level Study
selection system
commercial clearcut
diameter-limit cut
study results
Location: Penobscot Experimental Forest; Maine
Description: A graph depicting 30-year net production in MUs 90 through 93 after different treatments applied in the Cutting Practice Level Study
Date: 1980

Marking to remove competition and release spruce in a selection cut, in MU91 in October 1979
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU91
Cutting Practice Level Study
selection system
marking
release
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Marking to remove competition and release spruce in a selection cut, in MU91 in October 1979
Date: Oct-79

Ralph Griffin and University of Maine students in a single-tree selection stand with a 15-year cutting cycle, in MU91 in May 1973
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU91
Cutting Practice Level Study
selection system
personnel
Location: Penobscot Experimental Forest; Maine
Description: Ralph Griffin and University of Maine students in a single-tree selection stand with a 15-year cutting cycle, in MU91 in May 1973
Date: May-73