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roundup

Agriculture
8:09 am
Tue January 7, 2014

USDA one step closer to approving new herbicide resistant crops

Water hemp is one of several weeds building resistance to Roundup herbicide.
Credit 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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Agriculture
3:13 pm
Mon June 17, 2013

Scientists check Corn Belt waters for effects of ag runoff

One of the U.S. Geological Survey teams collecting water samples and checking cages for fish eggs in Missouri this summer: biologist Diana Papoulias, chemist Dave Alvarez, hydrologist Peter Van Metre, biologist Diane Nicks and toxicologist Don Tillitt.
Abbie Fentress Swanson/Harvest Public Media

Eleven miles northeast of Centralia, Mo., five U.S. Geological Survey scientists don waders and bright reflective life jackets to wade into Goodwater Creek. Plenty of fish live in the stream’s murky slow-moving waters, along with snakes, crayfish, mussels and snapping turtles. On this overcast morning, the team collects water samples and checks submerged cages of fathead minnows for eggs.

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Agriculture
4:41 pm
Wed October 24, 2012

Roundup resistance leading to more chemicals, study finds

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

Farmers and weeds are in a constant competition.

But with Monsanto’s introduction of Roundup herbicide and genetically engineered Roundup Ready crops in the mid-1990s, farmers gained a clear edge. The seeds, which were able to tolerate the herbicide, were adopted quickly. By 2011, more than 90 percent of soybeans and cotton, and more than 70 percent of corn were planted with Roundup Ready seeds.

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