Principal Forte is a post-emergence herbicide that controls a wide range of both grass and broad-leaved weeds.
Principal Forte will control fat-hen, common amaranth, field pennycress, barnyard grass, green bristle grass, hairy fingergrass and couch grass*, and many other weeds. For more information, please see below.
*Suppression of common couch top growth, reduction of growth in the following year has not been established.
Benefits
Application
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