Sunday’s Des Moines Register carried the latest journalistic exploration of herbicide-resistant “superweeds” on Iowa farmland. The story’s not new: agronomists at Iowa State University anticipated this problem and have been warning farmers for at least 15 years. Various published studies have shown the connection between widespread corn and soybean farming practices and the “rapid selection of 21 species of glyphosate-resistant weeds.”
Industry groups representing conventional growers have repeatedly accused advocates for clean water and sustainable farming of threatening rural Iowans’ way of life. Yet the dominant practices of corn and soybeans growers have accelerated the spread of resistant weeds through natural selection, potentially putting many Iowa farmers out of business in the coming years.
After the jump I’ve posted excerpts from Donelle Eller’s story for the Sunday Register and more background on the herbicide-resistant weed problem. The 2013 Union of Concerned Scientists briefing paper on “The Rise of Superweeds-and What to Do About It” is an excellent starting point.
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