The food system: a century of transition
1985
Manchester, A. | Lipton, K.L.
Extract: Today's U.S. food system barely resembles what existed at the turn of the century or even just prior to World War II. The number of farms has declined from a peak of 6.5 million in the mid-1930's to 2.3 million, while average size has increased from 155 acres in 1935 to about 437 acres. Machines have replaced animal power and such scientific techniques as tissue culture and gene splicing have increased yields and improved plant and animal characteristics. These and other changes have enabled U.S. agriculture to meet domestic food needs at reasonable prices while becoming the world's leading exporter.
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Este registro bibliográfico ha sido proporcionado por National Agricultural Library