Table 1.
Soil nutrient status at the experimental site in 2012 and 2013.
| Year | Soil fertility | Soil depth (cm) | Bulk density (g m-3) | pH | SOM (g kg-1) | WSOC (mg kg-1) | TN (g kg-1) | Av–N (mg kg-1) | Av–P (mg kg-1) | Av–K (mg kg-1) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2012 | LF | 0–20 | 1.20 | 8.47 | 14.80 | 46.70 | 0.79 | 23.90 | 19.00 | 364.50 |
| 20–40 | 1.51 | 8.55 | 12.60 | 42.80 | 0.67 | 18.00 | 14.20 | 273.40 | ||
| HF | 0–20 | 1.16 | 8.26 | 18.30 | 51.20 | 0.86 | 28.60 | 23.50 | 384.00 | |
| 20–40 | 1.47 | 8.34 | 15.70 | 46.50 | 0.73 | 21.40 | 17.60 | 288.10 | ||
| 2013 | LF | 0–20 | 1.17 | 8.49 | 13.60 | 45.90 | 0.73 | 22.20 | 17.30 | 394.50 |
| 20–40 | 1.46 | 8.51 | 11.90 | 41.80 | 0.69 | 19.70 | 15.60 | 300.70 | ||
| HF | 0–20 | 1.11 | 8.21 | 17.20 | 50.70 | 0.82 | 27.30 | 22.20 | 414.20 | |
| 20–40 | 1.39 | 8.47 | 14.00 | 46.40 | 0.71 | 23.60 | 19.30 | 316.80 | ||
LF: low soil fertility level; HF: high soil fertility level; SOM: soil organic matter; WSOC: water soluble organic carbon; TN: soil total nitrogen; Av–N: soil available nitrogen; Av–P: soil available phosphor; Av–K: soil available potassium.