Roundup

Agriculture and Harvest Public Media
5:00 am
Tue July 8, 2014

Palmer Amaranth Begins March Through Iowa

In Muscatine County, farmer Roger Hargrafen is doing all he can to eradicate the Palmer amaranth that emerged on his farm last year.
Amy Mayer/IPR

A fast spreading, crop destroying weed may be coming to the farms near you.

Palmer amaranth, which has plagued southern farms for decades, has been marching across the Midwest. It can decimate a crop. It can withstand many common herbicides. And it can cost farmers millions.

Roger Hargrafen, a farmer in Muscatine County, Iowa, is on the front lines in the battle against Palmer amaranth. His is one of four Iowa farms confirmed as having it.

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Agriculture and Harvest Public Media
9:40 am
Mon January 6, 2014

USDA one step closer to approving new herbicide resistant crops

Water hemp is one of several weeds building resistance to Roundup herbicide.
Bob Hartzler/Iowa State University

New herbicide-resistant corn and soybeans are a step closer to reaching farm fields in the U.S. They would help farmers control weeds that are no longer killed by the popular herbicide, Roundup.

Roundup resistant crops dominate corn, soybean and cotton production in the U.S. But the list of weeds that have evolved to withstand Roundup is growing, and as a result, farmers are using more chemicals to keep up.

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Roundup Resistant Weeds
7:25 am
Wed October 17, 2012

Roundup resistance leading to more chemicals, study finds

Water hemp in this soybean field was not killed by Roundup. (Courtesy Bob Hartzler/Iowa State University)

Farmers and weeds are in a constant competition. When the herbicide called Roundup came along, farmers got a clear edge. But now weeds are beginning to catch up. Grant Gerlock of Harvest Public Media has more on how Roundup-resistant weeds are changing the game.