"Misgivings About How a Weed Killer Affects the Soil"

"ALTON, Iowa — The puny, yellow corn stalks stand like weary sentries on one boundary of Dennis Von Arb’s field here. On a windy day this spring, his neighbor sprayed glyphosate on his fields, and some of the herbicide blew onto Mr. Von Arb’s conventionally grown corn, killing the first few rows."

"He’s more concerned, though, about the soil. During heavy rains in the summer, the runoff from his neighbor’s farm soaked his fields with glyphosate-laden water."

Stephanie Strom reports for the New York Times September 19, 2013.