| http://www.w3.org/ns/prov#value | - The USDA estimates CRP keeps more than 600 million pounds of nitrogen and more than 100 million pounds of phosphorous from flowing into waterways.By idling the erodible land and planting it in grasses and other vegetation, the program also creates wildlife habitat.Roger Wolf, director of environmental programs for the Iowa Soybean Association, said farmers must weigh their options when land comes
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