Integrated Crop Management News
 

Document Type

Article

Publication Date

7-24-2006

Abstract

There are variants of both corn rootworm species in Iowa that are resistant to crop rotation. The northern corn rootworm overcame the annual rotation of corn with another crop by developing a two-year life cycle. This variety of the northern corn rootworm (known as extended diapause) became common and caused extensive damage to rotated corn in the late 1980s in northwest Iowa. Since then it has spread throughout Iowa and is probably found in every county.

Copyright Owner

Iowa State University

Language

en

File Format

application/pdf

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