12 pp.©Cornell University, Ithaca, New York. All rights reserved. This case study may be reproduced for educational purposes without express permission but must include acknowledgment to Cornell University. No commercial use is permitted without permission.Soil degradation, a process that reduces the potential of land to support animal and plant production, has become one of the most pressing problems for farmers worldwide (Scherr 1999). Based on the opinions of 250 international experts, the United Nations Global Land Assessment of Degradation concluded as early as 1992 that degradation had caused a 38 percent loss in global agricultural land since the 1940s (Oldeman et al. 1992). This soil loss, at a rate of 5 to 10 million hectares per y...
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