Regulatory and fundamental aspects (A perspective of land as a waste; Regulations and guidelines for land application of wastes; Economic and regulatory aspects or land application of wastes to agricultural lands; Land application as a best practicable waste, treatment alternative; The admissible rate of waste (residue) application on land with regard to high efficiency in crop production and soil pollution abatement; Significance of soil characteristics to wastes on land); Transformations of nitrogen, phosphorus and heavy metals (Wuantidative description of trasfer of water and chemicals through soils; Nitrogen removal from wastewater effluent by a crop irrigation systems; Phosphate removal by sands and soils; Land application of wastewater: forage growth and utilization of applied N,P and K); Helalth aspects; Case histories of land applicatios of sewage; Application of sludgres to land; Industrial and agricultura waste (Overland recycling systems for animal waste treatment; Soil and crop response to applied animal waste; Salt accumulation in soil as a factor for determining application rates of beef feedlot manure and lagroon water; Treatment of potato processing wastewater on agricultura land: water and organic loading, and the fate of applied plant nutrients; Waste management problems and their impact on the environment).