Agricultural productivity Agriculture 67 Economic aspects 42 Farm produce 34 Agriculture and state 30 Cotton 30 Farms 25 Agricultural subsidies 22 Marketing 21 Agricultural credit 18 Agricultural prices 17 Food supply 17 Budget 16 Expenditures, Public 15 Food industry and trade 15 Governmental investigations 14 Public lands 14 Wheat 13 Fruit trade 12 Research 12 Homestead law 11 Sugar trade 11 Farmers 10 History 10 Law and legislation 10 Patents 10 Tobacco industry 10 Fibers 9 Grain 9 Manufactures 9