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Science team develops fast, accurate test to ID Palmer amaranth seed

Farmers will soon benefit from a new weed seed test that will help them stay ahead of invasive, prolific Palmer amaranth weed infestations. The new genetic test can detect one Palmer seed in a mix of 200 pigweed seeds with 99% accuracy. Researchers hope it will be commercially available by the end of 2021. A team of scientists from Minnesota, Colorado and Michigan started collaborating on an identification assay in 2018 after Minnesota prioritized tamping out the aggressive invasive. Palmer amaranth was first found in September 2016 in the state; later that fall, the ag commissioner listed Palmer as a prohibited noxious weed seed. That listing means that any seed lot contaminated with Palmer is not legal for sale. Seed lots properly labeled must have a noxious exam that includes genetic testing to determine if any amaranth seed found is Palmer.

99 9% accurate genetic test for early detection of Palmer Amaranth

99.9% accurate genetic test for early detection of Palmer Amaranth University of Minnesota Palmer Amaranth is a high-impact agronomic weed species that has cost the United States agriculture industry billions of dollars since its discovery outside of its native range in the southwestern U.S. and northwestern Mexico. Over the last 20 years, it has moved further north, and now poses a major threat to corn, soybean, and cotton growers across the south and Midwest regions of the United States. It is not legal to sell any kind of seed in Minnesota if the seed lot contains Palmer Amaranth. The problem is this particular invasive species–which has shown potential to wipe out up to 91% of corn yields, 68% of soybean yields, and 54% of cotton yields– is difficult to visibly distinguish from other pigweed species, making identification reliant upon genetic testing.

U of M researchers develop 99 9% accurate genetic test for early detection of Palmer Amaranth

April 5, 2021 Palmer Amaranth is a high-impact agronomic weed species that has cost the United States agriculture industry billions of dollars since its discovery outside of its native range in the southwestern U.S. and northwestern Mexico. Over the last 20 years, it has moved further north, and now poses a major threat to corn, soybean, and cotton growers across the south and Midwest regions of the United States. It is not legal to sell any kind of seed in Minnesota if the seed lot contains Palmer Amaranth. The problem is this particular invasive species which has shown potential to wipe out up to 91% of corn yields, 68% of soybean yields, and 54% of cotton yields is difficult to visibly distinguish from other pigweed species, making identification reliant upon genetic testing.

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