Table 2 Effect of organic material and nitrogen application level on soil properties
Organic material | Nitrogen level | Total N (g kg − 1) | SOM (g kg− 1) | Olsen- P (mg kg− 1) | Exchangeable K (mg kg− 1) | Alkali-hydrolysable N (mg kg− 1) |
|---|---|---|---|---|---|---|
CK | N0 | 1.27 ± 0.02e | 23.63 ± 1.12f | 18.88 ± 3.51b | 164.33 ± 38.63ab | 49.46 ± 3.25ab |
N1 | 1.35 ± 0.09b-e | 24.41 ± 1.91ef | 33.07 ± 10.98ab | 177.33 ± 35.23ab | 52.34 ± 3ab | |
N2 | 1.29 ± 0.1de | 25.42 ± 0.7c-f | 23.86 ± 2.39ab | 156 ± 33.06b | 54.74 ± 4.01ab | |
N3 | 1.31 ± 0.12c-e | 24.26 ± 0.82ef | 32 ± 22.47ab | 159 ± 20.81b | 50.78 ± 2.55ab | |
mean | 1.31 ± 0.08B | 24.53 ± 1.26C | 26.95 ± 12.43B | 164.17 ± 29.11A | 51.93 ± 3.51A | |
BC | N0 | 1.48 ± 0.04a-c | 27.67 ± 2.38b-d | 20.36 ± 3.25b | 161.67 ± 12.5ab | 52.58 ± 4.99ab |
N1 | 1.54 ± 0.14a | 28.04 ± 1.98a-c | 29.53 ± 4.64ab | 188.67 ± 26.08ab | 52.58 ± 5.04ab | |
N2 | 1.48 ± 0.05a-c | 26.96 ± 1.28b-e | 20.48 ± 2.9b | 202 ± 14.8ab | 45.86 ± 3.97bc | |
N3 | 1.43 ± 0.02a-e | 24.75 ± 1.36d-f | 21.68 ± 1.91ab | 241 ± 55.33a | 42.42 ± 6.54c | |
mean | 1.49 ± 0.08A | 27.05 ± 1.98B | 23.01 ± 4.87AB | 198.33 ± 40.51A | 48.36 ± 7.56A | |
BF | N0 | 1.47 ± 0.13a-d | 28.56 ± 0.3ab | 32.54 ± 8.17ab | 202.33 ± 69.76ab | 51.62 ± 7ab |
N1 | 1.53 ± 0.25ab | 28.21 ± 2.23ab | 37.93 ± 14.15a | 210.67 ± 75.08ab | 56.18 ± 2.04a | |
N2 | 1.49 ± 0.03a-c | 27.62 ± 0.66b-d | 35.86 ± 16.12ab | 212 ± 84.66ab | 54.98 ± 5.41ab | |
N3 | 1.42 ± 0.1a-e | 30.5 ± 2.2a | 21.08 ± 2.97ab | 160.33 ± 31.82b | 55.94 ± 11.84a | |
mean | 1.48a ± 0.14A | 28.72 ± 1.77A | 32.83 ± 12.02A | 196.33 ± 62.32A | 54.55 ± 6.92A | |
F-value test | ||||||
Organic material (O) | 8.9** | 18.68** | 2.09 | 1.96 | 4.64** | |
N application (N) | 1.17 | 0.08 | 1.56 | 0.2 | 1.13 | |
O*N | 0.21 | 2.07 | 0.8 | 1.08 | 1.79 | |