Palmer Amaranth - A Weed to Watch

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Palmer amaranth is an aggressive weed that can spread quickly and has evolved resistance to multiple herbicide sites of action. Field scouting and early identification are important to prevent weed seed production and spread. 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 sites of action.

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