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New Color-Enhanced Herbicide Site-of-Action Bulletin

March 16, 2001
The University of Illinois Extension bulletin, "Utilizing Herbicide Site of Action to Combat Weed Resistance to Herbicides," establishes a color-coded herbicide site-of-action classification system based on 14 sites of action. This three-page bulletin is intended to enhance the ability of growers to rotate herbicides based on site of action to slow further development of herbicide-resistant weed biotypes. The front cover explains the importance of using a site-of-action classification scheme for herbicide-resistance management. The inner table separates herbicide sites of action into 14 "primary" colors. Herbicide chemical families sharing a particular site of action are coded in shades of the respective site-of-action family "primary" color. The bulletin also includes common and trade names of herbicides commonly used in agronomic production systems in the Midwest. The back page of this bulletin includes corn and soybean herbicide premixes, with individual premix components coded with the appropriate color based on their respective site of action. The order numbers and prices for this bulletin are CS1 ($2) for individual publications and CS1-PK ($25) for packages of 25. This bulletin may be ordered through Information Technology and Communication Services, University of Illinois, Marketing and Distribution, 1917 South Wright Street, Champaign, IL 61820, or by calling 1-800-345-6087, or by e-mailing Sprague and Aaron Hager

Author: Aaron Hager Christy Sprague

The Pest Management and Crop Development Bulletin
Executive Editor: Kevin Steffey, Extension Entomologist

Subscription information: Phone (217) 244-5166 or email
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