Soils

Résumé du livre

Soils: an essential world resource; Parent materials and soil formation, soil genesis; Physical properties of soils; Soil water; Chemical and colloidal properties; Soils and plant nutrition; Soil organic matter; Soil ecology and environmental quality; Fertilizers and their use; Soil diagnosis; Acid soils and lime; Saline and sodic soils and their reclamation; Organic amendaments and recycling of wastes; Tillage; Soil conservation and management; Water quality and irrigation; Drainage systems; Soils classification; Soil surveys, interpretations, and use planning; Soils of the humid tropics and subtropics; Soil requiring unusual management; Soils, food production,a nd world population.