Authors: |
Gene D. Amman, Gerhard F. Fedde |
Year: |
1971 |
Type: |
Research Paper |
Station: |
Southern Research Station |
Source: |
Res. Pap. SE-148. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 6 p. |
Abstract
Infestations of the balsam woolly aphid, Adelges piceae (Ratz.), on European silver fir trees in a plantation were observed over a 7-year period. Infestations were usually light, but occasionally increased to heavy. Heavy infestations declined within 1 or 2 years without killing the trees or causing them apparent damage.
Citation
Amman, Gene D.; Fedde, Gerhard F. 1971. Infestation Trends of Balsam Woolly Aphid in an Abies Alba Plantation in North Carolina. Res. Pap. SE-148. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 6 p.