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Potential for a New Generation of Biodiversity in Agroecosystems of the Future

Leopold Center for Sustainable Agriculture, and Iowa State Univ., 209 Curtiss Hall, Ames, IA 50011-1050

View larger version (27K): [in this window] [in a new window]   Fig. 1. Total gross farm income, farm expenses, and net farm income in the USA, expressed in constant dollars (1982–1984 basis; USDA, Economic Research Service).

View larger version (27K): [in this window] [in a new window]   Fig. 2. Changing age distribution of U.S. farmers (1900–2000, U.S. Census of Agriculture).