Effect of Municipal Sewage on Soil Biological Properties in the Vicinity of Jaipur City of Eastern Rajasthan, India

Use of sewage sludge in agriculture is the most convenient practices of sludge disposal. Agriculture can use large and increasing quantities of sludge because it improve soil fertility by increasing the soil organic matter, microbial activity and plant nutrients and by improving the soil physical properties (Stamatiadis et al., 1999). The waste waters are suitable for crop production provided the content of major plant nutrients is high and that of toxic elements is low. Its long term application would affect the physical, chemical and biological properties of soil (Antil, 2012). All the microbially-mediated biochemical reactions involving nutrient cycling are catalyzed by enzyme and depending on their nature and level of contamination, many heavy metals have been found to impede soil enzyme activities to different extents (Yang et al., 2008).