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Palmer Amaranth in Iowa - What We Know

August 19, 2016
Palmer Amaranth locations in Iowa map

Palmer amaranth was first detected in Iowa in 2013 in Harrison County, and until recently the invasive weed had been found in four additional counties. About a month ago, two landowners (both professional agronomists) detected Palmer amaranth in fields planted in spring 2016 with native seed mixes for conservation purposes. In the time since those July detections, Palmer amaranth has been found in an additional five counties (multiple fields in several of the counties). We think it’s safe to say the calm before the storm has ended.


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