Abstract
Causes of apical bud abortion in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) were examined in two nurseries in western Oregon. Insect and damage surveys indicated that leafhoppers and Lygus hesperus Knight increased in abundance during August and September, coincident with damage accumulation. Caging studies confirmed that L. hesperus can cause bud abortion and indicated that nymphs of this insect could complete development to maturity on Douglas-fir seedlings.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Furniss, R.L., and Carolin, V.M. (1977) Western Forest Insects. U.S.D.A. Forest Serv. Misc. Publ. 1339. 654 pp.
Fye R.E. (1980) Weed sources of Lygus bugs in the Yakima Valley and Columbia Basin in Washington. J. Econ. Entomol. 73, 469–473.
Fye R.E. (1982) Weed hosts of the Lygus (Heteroptera: Miridae) bug complex in central Washington. J. Econ. Entomol. 75: 724–727.
Henry, T.J., and Lattin, J.D. (1985) Taxonomic status, biological attributes, and recommendations for future work on the genus Lygus (Heteroptera: Miridae). In Importance of Lygus and Status of Research, C. Hedlund, ed. U.S.D.A. Special Publication (in press).
Jeppson L.R. and MacLeod G.F. (1946) Lygus bug injury and its effect on the growth of alfalfa. Hilgardia 17: 165–188.
Kelton, L.A. (1975) The Lygus Bugs (Genus Lygus Hahn) of North America (Heteroptera: Miridae). Mem. Entomol. Soc. Canada No. 95. 101 pp.
Schowalter T.D. (1985) Adaptations of insects to disturbance, pp. 235–252, In The Ecology of Natural Disturbance and Patch Dynamics, S.T.A. Pickett and P.S. White, (eds.) Academic Press, Inc., N.Y.
Steel R.G.D., and Torrie J.H. (1960) Principles and Procedures of Statistics. McGraw-Hill Book Co., Inc., New York. 481 pp.
Strong F.E. (1970) Physiology of injury caused by Lygus hesperus. J. Econ. Entomol. 63: 808–814.
Sutherland, J.R., and Van Eerden, E. (1980) Diseases and Insect Pests in British Columbia Forest Nurseries. British Columbia Ministry of Forests/Canadian Forestry Service, Joint Rpt. No. 12.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Schowalter, T.D., Overhulser, D.L., Kanaskie, A. et al. Lygus hesperus as an agent of apical bud abortion in Douglas-fir nurseries in western Oregon. New Forest 1, 5–15 (1986). https://doi.org/10.1007/BF00028117
Issue Date:
DOI: https://doi.org/10.1007/BF00028117