Table 2.
Methods used for different soil biochemical analysis.
| Soil biochemical properties | Method used | References |
|---|---|---|
| pH | pH meter | Datta et al. (1997) |
| EC | electronic EC meter | Datta et al. (1997) |
| OC | Wet oxidation method | Walkley and Black (1934) |
| Available N | Kjeldahl method | Subbiah and Asija (1956) |
| Available P | Olsens method | Olsen et al. (1954) |
| Available K | Flame photometer method | Hanway and Heidel (1952) |
| Soil microbial count (107 cfu/g soil) | Standard serial dilution technique on soil extract media | Wright (1933) |
| Diazotrophic count (104 cfu/g soil) | Standard serial dilution technique on nutrient agar media | Wright (1933) |
| Actinomycetes count (105 cfu/g soil) | Standard serial dilution technique on Kenknights media | HiMedia (2009) |
| Dehydrogenase activity | Triphenylformazon through reduction of 2,3,5 triphenyltetrazolium chloride | Casida et al. (1964) |
| Alkaline phosphatase activity | n-nitrophenyl method | Tabatabai and Bremner (1969) |