Archive:Poplar/Miscellaneous Leaf-feeding Aphids
From Bugwoodwiki
From: Ostry, Michael E.; Wilson, Louis F.; McNabb, Harold S., Jr.; Moore, Lincoln M. 1988. A guide to insect, disease, and animal pests of poplars. Agric. Handb. 677. Washington, DC: U.S. Department of Agriculture. 118 p.
Contents |
Importance
Nymphs and adults feed on the undersides of leaves and on the new stems of Populus. Some leaves are discolored or killed. The insect is unsightly on ornamental trees but does not damage commercial trees.
Look For:
• Colonies of brown-to-black aphids on the newly developing stems or along the veins on the leaf undersurface in midsummer. There may be a few hundred aphids in the colony, which is often attended by ants.
|
| Bacterial Ooze. |
Biology
Aphids move onto developing leaves and stems in spring and feed and reproduce throughout the warm season. Adults overwinter.
Monitoring
Inspect shoots and leaves in midsummer to late summer in nurseries and young plantations. Control is not recommended unless more than 75 percent of the leaves have colonies or unless appearance is important.
Control
• Not normally necessary because this insect is usually kept in check by predators.
• If needed, spray colonies with an insecticide soap or other chemical insecticide recommended for sucking insects.
