Rick Cruse
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Iowa State University agronomy professor Rick Cruse, is seen here in a farm field test plot inside the Neal Smith National Wildlife Refuge on Tuesday, April 22, 2014, outside Prairie City, Iowa. Cruse recently received a grant to research the potential economic impacts of soil erosion. (AP Photo/The Des Moines Register, Charlie Litchfield) MAGS OUT, TV OUT, NO SALES, MANDATORY CREDIT
