Table 2 Soil characteristics under various long-term experiments.
SOC | TN | Available P | Available K | pH | EC | Clay content | ||
|---|---|---|---|---|---|---|---|---|
(g/kg) | (mg/kg) | (mmho/cm) | (%) | |||||
Unmanaged | GP | 22.3a† | 2.0a | 12.66b | 795.5b | 6.10b | 0.160ab | 11.60 |
WT study | TTWF | 9.5d | 0.8d | 7.26b | 507.2e | 4.90fg | 0.140bc | 11.00 |
NTWF | 9.2d | 0.8d | 7.60b | 519.7e | 4.70fg | 0.160ab | 11.40 | |
NTWC | 9.7d | 0.8d | 9.65b | 549.8e | 5.00efg | 0.110bcde | 11.50 | |
WP study | CTWP | 15.9bcAB | 1.2c | 3.30b | 742.3bcA | 4.90fgAB | 0.110cdeB | 15.10 |
PTWP | 14.7cB | 1.1c | 3.50b | 668.8cdB | 5.00efA | 0.098deB | 15.70 | |
NTWP | 17.3bA | 1.3b | 3.74b | 749.7bcA | 4.66gB | 0.190aA | 13.90 | |
CR study | NB90 | 9.6dB | 0.7dC | 2.50bB | 521.5eB | 5.80cB | 0.034gC | 12.30 |
NBFM | 10.6dB | 0.9dB | 1.90bB | 581.3deB | 5.30deC | 0.080efB | 11.96 | |
SB90 | 14.6cA | 1.2bcA | 63.40aA | 1169.5aA | 6.60aA | 0.130bcdA | 12.20 | |
NBPV | 10.6dB | 0.8dBC | 1.50bB | 564.9eB | 5.50cdBC | 0.040fgC | 12.30 | |