Integrated Crop Management News
 

Document Type

Article

Publication Date

5-8-2000

Abstract

The critical period of competition is the point of time when weeds that emerge with the crop begin to impact yields. This information is essential when implementing total postemergence weed management programs. Most studies have found that crop yields are protected if weeds are controlled before they reach a height of 4 to 5 inches in corn or a height of 6 to 8 inches in soybeans. When making management decisions, it is important to remember that the critical period varies widely, depending upon weed species and densities, environmental conditions, and cultural practices.

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 Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user.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