Investigation of Biological Sludge of Industrial Sewage Effect on Properties and Structure of Agricultural Soil

Application of sewage sludge as a soil-sludge mixture, depending on sludge dosage rate, increase available phosphorus, total nitrogen, EC, CEC, decrease in pH value and change physical and chemical properties of soil-sludge mixtures. Application of BS to the soil several months before cultivation after composting reduces adverse effects.

Keywords:

biological sludge , structure of soil , organic matter , electro conductivity