Scouting for insects: Aphids
Editor’s note: This article is from the archives of the MSU Crop Advisory Team
Alerts. Check the label of any pesticide referenced to ensure your use is
included.
Editor’s note: This information is from the new field guide A Pocket Guide for IPM Scouting in Herbaceous Perennials. For ordering information, call 517-353-6740 or visit: http://www.ipm.msu.edu/pdf/pocketGuidesLandsc07.pdf
Aphids use their piercing-sucking mouthparts to withdraw fluids from
terminal growth and leaf undersides. This results in leaf curling or
distortion. Aphids produce honeydew, a clear, sticky liquid. Aphids
feeding on plants outdoors are susceptible to many beneficial insects
(natural enemies), including parasitic wasps, ladybird beetles, green
lace-wings and hover flies. Many species of aphids feed on a wide
variety of herbaceous perennials. (view images)
Management. A hard water spray will quickly remove aphids from
plants and minimally affect any beneficial insects. Avoid
overfertilizing and overwatering plants. Remove weeds from adjacent
areas – many weeds serve as a reservoir for aphids. Contact and systemic
insecticides may be effective in controlling aphids.