Nitrogen availability (1)
| Low (<280 kg/ha) |
| Medium (280 - 560 kg/ha) |
| High (>560 kg/ha) |
Phosphorus availability (2)
|
| Low (<10 kg/ha) |
| Medium(10 - 25 kg/ha) |
|
| High (>25 kg/ha) |
Pottassium availability (3)
|
| Low (<120kg/ha) |
|
| Medium (120 - 280 kg/ha) |
|
| High (>280 kg/ha) |
Soil salinity (4)
|
| Non Saline (0-1.68 dS/m) |
| Low Saline (1.68 - 3.36 dS/m) |
|
| Mild Salinity (3.36 - 6.72 dS/m) |
|
| High Salinity (6.72 - 13.44 dS/m) |
Soil pH (5)
|
| Strongly acidic (<4.5 ) |
| Moderately acidic (4.5 - 5.5 ) |
| Slightly acidic (5.5 - 6.5 ) |
|
| Normal (6.5 - 7.5) |
| Slightly alkaline (7.5 - 8.5 ) |
| Moderately alkaline (8.5 - 9.5 ) |
Sulphur availability (6)
|
| Deficient (< 10 ppm ) |
|
| Sufficient (> 10 ppm ) |
Manganese availability (7)
|
| Deficient (<2.0 ppm) |
|
| Sufficient (>2.0 ppm) |
Zinc Availability (8)
|
| Deficient (<0.6 ppm) |
|
| Sufficient (>0.6 ppm) |
Iron availability (9)
|
| Deficient (<4.5 ppm ) |
|
| Sufficient (>4.5 ppm ) |
Copper Availability (10)
|
| Deficient (<0.2 ppm) |
|
| Sufficient (>0.2 ppm) |
Boron Availability (11)
|
| Deficient (<0.5 ppm ) |
|
| Sufficient (>0.5 ppm ) |
Organic Carbon percentage (12)
|
| Low (<0.5%) |
| Medium (0.50 - 0.75%) |
|
| High (>0.75%) |
|