The amelioration of the red soil citrus orchard is fundamental to the production of high quality as well as total production of fruits. Comprehensive orchard soil management is conclusive to soil amelioration. Soil amelioration involves several marked changes such as, physical and chemical, biological and/or biochemical (enzyme activities) properties in the soil of these orchards. However, reports on the properties of biology, especially in biochemistry in this field are limited. This study, therefore, is t...