Titlebook: Advances in Soil Science; Soil Restoration Vol Rattan Lal,B. A. Stewart Book 1992 Springer-Verlag New York Inc. 1992 Fauna.Soil fertility.e

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Restoring Land Degraded by Gully Erosion in the Tropics,ists. The literature abounds with discussions of the causes and mechanisms of gully formation and the methods of its control. Readers are referred to detailed reviews elsewhere (Peterson, 1950; Antevs, 1952; Ireland et al., 1939; Schumm and Hadley, 1957; Riquier, 1958; Thompson, 1964; Seginer, 1966;

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Reclamation of Indurated, Volcanic-Ash Materials in Latin America,s will be reduced from 0.35 to 0.20 between 1975 and 2000 (Barney, 1980). Wind and water erosion are among the major reasons for the decline in food production and loss of productive land (Brown and Wolf, 1984).

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Need for Land Restoration,es of soil—the most basic of all natural resources. The objective is not only to minimize soil degradation but to reverse the trend through restorative measures of soil and crop management. The soil quality and its productive capacity must be enhanced beyond preservation (status quo) through soil-bu

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Reclamation of Chemically Degraded Soils,l. Man is learning that the resiliency of soil is finite and that soil degradation is not easily reversed, if ever. The focus of land degradation in this century has been on soil erosion as increasing areas of forest, grassland, and wetland have been cleared for crop production. Soil erosion represe