Elm Spanworm, A Pest of Hardwood Forests in the Southern Appalachians
The elm spanworm (Ennomos subsignatius [Hbn.]) epidemic in the southern Appalachians has continued for nearly a decade, and large portions of North Carolina, Georgia, and Tennessee are still infested. Weather, parasitism, predation, and disease have exerted pressure in localized areas but have not prevented the spread of the spanworm into new localities. Spanworm larvae in the southern Appalachians begin hatching from clusters of overwintering eggs toward the end of April. The intensity of larval feeding keeps pace with developing shoots until late June when pupation starts. Shortly thereafter, the moths emerge and the eggs are usually all deposited before the end of July, thus completing the life cycle. Yearly larval defoliation of upland hardwoods during the early summer has resulted in tree mortality and stand deterioration. Hickories and the white and red oak groups have been most heavily attacked, although practically all hardwood trees, except yellow-poplar, are susceptible to some damage. Besides timber losses, the spanworm has adversely affected forest recreation, hunting, fishing, and the summer tourist business.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
Document Type: Journal Article
Affiliations: Southeastern Forest Expt. Sta., Forest Service, U. S. Dept. Agric., Asheville, N. C.
Publication date: 1964-02-01
More about this publication?
- The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
2016 Impact Factor: 1.675 (Rank 20/64 in forestry)
Average time from submission to first decision: 39.6 days*
June 1, 2016 to Feb. 28, 2017
Also published by SAF:
Other SAF Publications
- Submit a Paper
- Membership Information
- Author Guidelines
- SAF Convention Abstracts
- Ingenta Connect is not responsible for the content or availability of external websites