| 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 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU7 Farm Woodlot Study selection system pruning release |
| Organisms: |
red spruce red maple |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | 7-inch dbh red spruce pruned and released by cutting 14-inch dbh red maple, in MU7 on July 27, 1954 |
| Date: | 7/27/1954 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU2 Farm Woodlot Study selection system marking release photo point |
| Organisms: |
aspen balsam fir spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Aspen marked for cutting to release balsam fir and spruce, photo point #4 in MU2 on July 16 1954 |
| Date: | 7/16/1954 |