摘要:Recent increases in natural gas and fossil fuel based energy sources have had a negative impact on the financial condition of agricultural producers across the nation. • In addition to higher fuel costs for trucks, equipment, and irrigation motors, the cost of nitrogen fertilizer is closely linked to energy prices and has also increased significantly. • This study quantifies the impacts of these increases on the economic viability of representative farms located throughout the United States for the years 2005 and 2006.