1. |
Soil reaction (pH) (1:2.5 soil: water suspension) |
Potentiometry (Kondvilkar et al., 2017) |
2. |
Electrical conductivity (1:2.5 soil: water suspension) |
Conductometry (Kondvilkar et al., 2017) |
3. |
Organic carbon (%) |
Wet oxidation (Walkley and Black, 1934) |
4. |
Available Nitrogen (kg ha-1) |
Macro kjeldahl Distillation (Subbiah and Asija, 1956) |
5. |
Available Phosphorus (kg ha-1) |
Spectrophotometry (Olsen et al., 1954) |
6. |
Available Potassium (kg ha-1) |
Flame photometry (Kondvilkar et al., 2017) |
7. |
Exchangeable Calcium and Magnesium (mEq/1000 g) |
Complexometric titration (Kondvilkar et al., 2017) |
8. |
DTPA extractable Iron, Manganese, Zinc and Copper (ppm) |
Atomic Absorption Spectrophotometry (Lindsay and Norwell, 1978) |