A Palmer amaranth infestation is pictured in a corn field in south-central Nebraska. (UNL Institute of Agriculture and Natural Resources)

BISMARCK, N.D. (AP) — Agriculture officials say an invasive weed has been confirmed in Grant County in western North Dakota.

The North Dakota Department of Agriculture said Thursday that a farmer contacted his county weed officer after discovering Palmer amaranth. Samples were submitted for DNA analysis to the National Agricultural Genotyping Center, which confirmed the weed.

Palmer amaranth is native to the southwestern United States but was accidentally introduced to other areas. The fast-growing and prolific seed producer has devastated crops in the South and Midwest.

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