| 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: |
MU9 Compartment Management Study selection system timber stand improvement plot photo point |
| Organisms: | white spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | White spruce stand after first improvement cutting, photo point #5 (2 chains northeast of permanent sample plot 4/1) in MU9 on May 18 1954 |
| Date: | 5/18/1954 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU9 Compartment Management Study selection system regeneration photo point |
| Organisms: |
balsam fir white spruce eastern white pine |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Seedlings of balsam fir, eastern white pine, and white spruce in an opening made about 12 years ago, photo point #4 in MU9 on May 18 1954 |
| Date: | 5/18/1954 |