An Urban's View
Urban C. Lehner Editor Emeritus
Wed Sep 10, 2014 07:51 PM CDT

Because agriculture contributes 70% of the nutrients to the Gulf of Mexico's massive "dead zone," agriculture must be part of the solution. But how? What will it take to reduce nutrient runoff from farms?

Regulation, some argue: Only tough enforcement will get the job done, they say.

Wrong, retorts Sean McMahon. Regulation won't work. To reduce nitrogen and phosphorus 45% -- the goal of the Iowa Nutrient Reduction Strategy adopted by the state's legislature -- farmers must be convinced to voluntarily adopt better practices.

As of September 15, McMahon is executive director of the Iowa Agriculture Water Alliance, a new ...

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