Integrated Crop Management News
 

Document Type

Article

Publication Date

5-1-2000

Abstract

Expectations are that corn flea beetle populations may be very large this spring (see article on pages 55-56). This insect can physically damage seedling corn by chewing long lesions in the leaves. These feeding lesions run parallel to the leaf veins and they first appear as thin, silvery or white streaks. Heavily injured leaves turn brown and wilt. The insect also can transmit Stewart's wilt, also called Stewart's disease. This disease can be controlled on susceptible corn by controlling the corn flea beetle with an insecticide. Use the following thresholds: in field corn prior to stage V5, 50 percent of plants with severe feeding injury and 5 or more beetles per plant; in seed corn on susceptible inbreds, 10 percent of the plants with severe feeding injury and 2 or more beetles per plant.

Copyright Owner

Iowa State University

Language

en

File Format

application/pdf

Share

COinS
 

Disclaimer

The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.