| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU23 Compartment Management Study shelterwood system thinning release |
| Organisms: | spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Completed spacing favoring spruce, uniform shelterwood stand, in MU23 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU23 Compartment Management Study shelterwood system personnel thinning release |
| Organisms: | spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Completed uniform shelterwood spacing job favoring spruce with a few hardwoods in MU23 on March 29 1982 |
| Date: | 3/29/1982 |
| 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 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | release |
| Organisms: | balsam fir |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Balsam fir thicket on December 3 1958 |
| Date: | 12/3/1958 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | release |
| Organisms: | balsam fir |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Balsam fir thicket on December 3 1958 |
| Date: | 12/3/1958 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU13 Compartment Management Study diameter-limit cut marking release plot photo point |
| Organisms: |
red maple eastern hemlock red spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | 11-inch dbh red maple and 23-inch dbh eastern hemlock marked to release 11-inch dbh red spruce, photo point #5 (permanent sample plot 6/1) in MU13 on July 5 1956 |
| Date: | 7/5/1956 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU24 Compartment Management Study diameter-limit cut marking plot release regeneration photo point |
| Organisms: |
eastern hemlock red maple American beech balsam fir |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Eastern hemlock - hardwood stand before cutting, 9-inch dbh red maple and 12-inch dbh American beech marked for cutting, 14-inch dbh hemlock kept as future sawlog tree, balsam fir and beech regeneration, photo point #2 (on MU boundary behind permanent sample plot 1/1) in MU24 on May 24 1955 |
| Date: | 5/24/1955 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
regeneration release |
| Organisms: |
gray birch red maple |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Overtopping gray birch and red maple cut to release softwood reproduction, along road to boat landing on August 2 1954 |
| Date: | 8/2/1954 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | release |
| Organisms: |
gray birch white spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Weeding with sodium arsenite tabs. Tab being inserted in grey birch to release white spruce sapling, on August 2 1954 |
| Date: | 8/2/1954 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | release |
| Organisms: | balsam fir |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Sections from two balsam fir trees, section on left is from tree released 10 years ago (grew 4.5 inches from a dbh of 6.5 inches in 1944 to 11.0 inches in 1954), section on right shows last 10 years of growth of tree that was not released (grew 0.6 inches in dbh in the last decade), on June 28 1954 |
| Date: | 7/28/1954 |