Soil Erosion Control: Observations from the US Experience
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World population is expected to increase by 40 percent by the year 2000. The rate of expans10n of
new cropland is slowmg down. Increased food requirements must therefore be met primanly through application of
new technology and protection of cropland from the ravages of erosion and other forms of deterioration. The USA
has recently completed 50 years of expenence with ma Jar programmes to control erosion. The history of the
establishment and evolution of those programmes within a changing pohtical environment is briefly revtewed. The
1111hal programmes were implemented mall areas of the USA. However, recent surveys have md1cated that harmful
rates of erosion are lm11ted to approximately20 percent of the cropland. Some progress has been made at targeting
control efforts to areas of high on-farm erosion rates.