Integrated Crop Management News
 

Document Type

Article

Publication Date

7-2-2001

Abstract

Over the next several weeks, non-Bt cornfields should be scouted for European corn borers. If populations do exceed the economic threshold, treatment is warranted to prevent substantial yield loss. Scouting should start in the tallest cornfields because adults (moths) are often attracted to these fields in larger numbers. Look for shot holes in the leaves after corn reaches 17 to 21 inches in extended leaf height. When shot holes or larvae are found in the taller corn, scout fields with smaller corn. There is very little reason to scout a field for larvae if no shot holes are detected in the leaves.

Copyright Owner

Iowa State University

Language

en

File Format

application/pdf

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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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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/.