Decision Support System for

Soil Health Assessment

Division of Soil Science and Agricultural Chemistry

Indian Agricultural Research Institute

New Delhi






  Hill Soil

      Parameter Ratings

      Soil Health Index Calculator

      About us


Rating chart




  Chemical indicator



     Electrical conductivity (dS m-1)


     Soil organic carbon (g kg-1) 


     KMnO4 oxidisable carbon   (mg kg-1) 


     Available phosphorus (mg kg-1)


     Available potassium (mg kg-1)


     Available iron (mg kg-1)


     Available manganese (mg kg-1)


     Available zinc (mg kg-1)


     Available copper (mg kg-1)


   Physical indicator

     Bulk density (Mg m-3)


     Maximum water holding capacity (%)


  Biological indicator

     Microbial biomass carbon (mg kg-1)


     Dehydrogenase activity (ug TPF g-1 24 h-1)


     Potentially mineralizable  nitrogen (mg kg-1)


     Carbon mineralization (g CO2-C g-1 h-1 )


     Microbial metabolic quotient
     (g CO2-C h-1 kg-1 MBC)


  Soil Health Index