Facts + Statistics: Sources

• Corn yield and crop value data for South Dakota and the United States: United States Department of Agriculture (USDA), National Agriculture Statistics Service (NASS), South Dakota Agriculture Statistics Service

• Fertilizer utilization statistics: research conducted by Blue, Johnson & Associates and provided by Corn Farmers Coalition

• Land use, sustainability, fertilizer and pesticide use information: National Corn Growers Association, April 2009

• Soil erosion data: USDA

• Corn use in South Dakota data: PRX ProExporter Network report, July 2009

• Livestock value calculations: based on data from the Census of Agriculture State Profile (USDA), South Dakota Agriculture Statistics Service, PRX ProExporter Network information

• South Dakota ethanol data and economic impact conclusions: South Dakota Corn Utilization Council

• Biotech corn safety data: studies conducted by Monsanto Company

• Future corn use estimations: Corn Farmers Coalition, USDA

• Urbanchuck Study