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Last Updated: 7/31/2026

MesoCore®

Active Ingredient: Clopyralid , Mesotrione

2 x 2.5’s and 265 totes

MesoCore® is for use on field corn, field seed corn, field silage corn and yellow popcorn only (collectively referred to as corn). This is a combination of mesotrione (Group 27) and clopyralid (Group 4) advised to be tank mixed with a Group 15 herbicide including acetochlor or metolachlor for weed control in corn. This combination of three herbicide modes of action controls many grass and broadleaf weeds by interfering with normal germination, growth and seedling development. When applied after weed emergence, MesoCore will provide control of many broadleaf weed species, but will not provide consistent control of emerged grass weeds.

Compare to: Resicore®

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    • Combines two modes of action to increase the spectrum of weed control in corn.
    • Can be tank mixed with acetochlor or Priority® 8E to increase the spectrum of weed control in corn.
    • Concentrated formulation that reduces handling, storage and disposal costs.
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