Palmer Amaranth- A Weed to Watch


Palmer amaranth is an aggressive weed that spreads easily and has evolved resistance to multiple herbicide modes of action. Field scouting and early identification are important to prevent seed production and spread of the weed. Distinguishing Palmer amaranth from other pigweed species can be difficult. Petiole length and appearance of the inflorescence are key differentiating characteristics. Weed management strategies should include overlapping residual herbicides and multiple herbicide applications with unique modes of action.

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