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Herbicide Guide (WC94) Now Available on the ISU Weed Science Web Page

The 2013 Herbicide Guide for Iowa Corn and Soybean Production (WC 94) can now be accessed from the Iowa State University Weed Science web page. The publication provides an update of new herbicide products as well as an herbicide effectiveness chart for herbicides used in soybean and corn. Herbicide site of action and injury symptoms are described and information about herbicide group numbers is included. A list of prepackage mixtures of herbicides is included. The current herbicide resistant weed situation in Iowa is described and a discussion about Palmer amaranth is provided. If you have questions about WC 94 or other aspects of weed management, please contact Mike Owen at or Bob Hartzler at


This article was published originally on 1/30/2013 The information contained within the article may or may not be up to date depending on when you are accessing the information.

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