What are the uses of agricultaral management and distribution of food
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Modern American agriculture has had an impressive history of increasing productivity that has resulted in affordable food, feed, fiber, and more recently, biofuel crops for domestic purposes and agricultural exports. Although the U.S. domestic and international markets are much larger than they were in the 1900s, farmers of the 21st century produce enough agricultural products to meet the current demands of both markets on the same acreage as a century ago. In addition, the average percentage of disposable income spent by U.S. consumers on food has declined from about 21 percent in 1950 to 9.4 percent in 2004.
Although small and medium-sized farms represent more than 90 percent of total farm numbers and manage about half of U.S. farmland and other farm assets, U.S. agriculture has become increasingly dependent on large-scale, high-input farms that specialize in a few crops and concentrated animal production practices for most U.S farm products. In 2007, the largest 2 percent of U.S. farms were responsible for 59 percent of total farm sales. Large farms have rapidly increased their share of total U.S. farm production value, while midsized commercial family farms that are important to rural community social and economic life are declining in number and importance. These trends can be partly attributed to technical innovations, economies of scale, and the increasing consolidation of food processing, distribution, and retailing sectors.
Many modern agricultural practices have unintended negative consequences, or externalized costs of production, that are mostly unaccounted for in agricultural productivity measurements or by farm enterprise budgets. Loss of water quality through nitrogen and phosphorus loadings in rivers, streams, and ground water contributes to dramatic shifts in aquatic ecosystems and hypoxic zones. Agricultural pesticides can contaminate streams, ground water, and wells. Excessive use of certain pesticides could be harmful to agricultural workers and might pose food safety risks. The nutrient density of 43 garden crops (mostly vegetables) has been shown to have declined between 1950 and 1999 in the United States, suggesting possible tradeoffs between yield and nutrient content. Agriculture contributes to total greenhouse-gas emissions, particularly carbon dioxide (CO2) from syn-
Modern American agriculture has had an impressive history of increasing productivity that has resulted in affordable food, feed, fiber, and more recently, biofuel crops for domestic purposes and agricultural exports. Although the U.S. domestic and international markets are much larger than they were in the 1900s, farmers of the 21st century produce enough agricultural products to meet the current demands of both markets on the same acreage as a century ago. In addition, the average percentage of disposable income spent by U.S. consumers on food has declined from about 21 percent in 1950 to 9.4 percent in 2004.
Although small and medium-sized farms represent more than 90 percent of total farm numbers and manage about half of U.S. farmland and other farm assets, U.S. agriculture has become increasingly dependent on large-scale, high-input farms that specialize in a few crops and concentrated animal production practices for most U.S farm products. In 2007, the largest 2 percent of U.S. farms were responsible for 59 percent of total farm sales. Large farms have rapidly increased their share of total U.S. farm production value, while midsized commercial family farms that are important to rural community social and economic life are declining in number and importance. These trends can be partly attributed to technical innovations, economies of scale, and the increasing consolidation of food processing, distribution, and retailing sectors.
Many modern agricultural practices have unintended negative consequences, or externalized costs of production, that are mostly unaccounted for in agricultural productivity measurements or by farm enterprise budgets. Loss of water quality through nitrogen and phosphorus loadings in rivers, streams, and ground water contributes to dramatic shifts in aquatic ecosystems and hypoxic zones. Agricultural pesticides can contaminate streams, ground water, and wells. Excessive use of certain pesticides could be harmful to agricultural workers and might pose food safety risks. The nutrient density of 43 garden crops (mostly vegetables) has been shown to have declined between 1950 and 1999 in the United States, suggesting possible tradeoffs between yield and nutrient content. Agriculture contributes to total greenhouse-gas emissions, particularly carbon dioxide (CO2) from syn-
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