Prefix Herbicide


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Product Overview

Prefix® residual herbicide offers the proven performance of fomesafen combined with S-metolachlor for superior control of broadleaf weeds and grass in cotton and soybean. By providing timely weed control using two unique modes of action, Prefix is an ideal solution for controlling glyphosate- and ALS-resistant weeds, and its superior weed control helps to maintain clean fields and increase yield potential throughout the season.

Product Highlights

  • Provides timely weed control using two different modes of action to manage key ALS- and glyphosate-resistant weeds
  • Delivers extended residual weed control activity for properly timed post-emergence herbicide applications
  • Offers proven performance against broadleaf weeds and grass
  • Provides excellent crop safety


“When it comes to waterhemp, you have to spray it early and often, and use a pre-emergence herbicide. Using Prefix herbicide is the difference between a clean soybean field and a weedy one.” - Lucas Rodgers – Grower, Bellflower, Missouri

“With Palmer amaranth and marestail resistance present, Prefix and Flexstar® GT 3.5 herbicides for soybeans have been our saviors on the farm.” - Frank Small – Grower, Salisbury, North Carolina

Download supporting Prefix documents

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Soybean Herbicide Portfolio Sell Sheet(PDF)
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Prefix Technical Bulletin(PDF)
CP Products