Soil quality is hard to assess directly due to collective and multiple functional effects but can be evaluated from alterations in soil properties due to management operations. Conventionally, due to availability of easy analysis techniques soil quality studies basically focused on chemical and physical properties of soil (Larson and Pierce, 1994) but in recent years it was found that biological properties of soil act as early and sensitive indicators in response to alteration in management systems (Islam and Weil, 2000 and Kennedy and Papendick, 1995). Consequently biological parameters together with soil chemical and physical properties are recognized to be necessary to assess SQ as affected by changes in management operations (Parkin et al., 1996).