N addition levels | Leaf | Stem | Root | |||||
Sb + Lc | Lc + Af | Sb + Lc + Af | Lc + Af | Sb + Lc | Lc + Af | Sb + Lc + Af | ||
| Obs | 59.7 ± 1.05 | 53.2 ± 0.68 | 57.4 ± 0.41 | 65.6 ± 0.67 | 66.0 ± 0.30 | 57.5 ± 0.51 | 54.5 ± 0.68 |
N0 | Exp | 63.8 ± 2.05 | 58.0 ± 2.13 | 60.8 ± 1.78 | 61.6 ± 0.99* | 60.9 ± 1.17* | 54.5 ± 2.38 | 58.6 ± 2.29 |
| k | 0.880 a | 1.231 bc | 1.027 c | 0.806 b | 0.665 c | 0.979 c | 1.164 a |
| Obs | 58.8 ± 0.89 | 52.3 ± 1.10 | 54.8 ± 0.35 | 65.5 ± 0.61 | 63.3 ± 0.40 | 59.1 ± 0.41 | 60.6 ± 0.56 |
N15 | Exp | 61.3 ± 1.13 | 55.6 ± 0.63* | 57.6 ± 0.74* | 61.6 ± 1.19* | 61.7 ± 1.98 | 57.1 ± 1.23 | 60.0 ± 1.26 |
| k | 1.008 a | 1.347 ab | 1.181 b | 0.774 b | 0.791 a | 0.951 cd | 0.821 bc |
| Obs | 56.0 ± 0.27 | 55.1 ± 0.43 | 54.4 ± 0.22 | 61.8 ± 0.31 | 65.1 ± 1.02 | 60.2 ± 0.29 | 61.2 ± 0.82 |
N30 | Exp | 60.3 ± 0.56* | 53.8 ± 0.42 | 56.7 ± 0.58* | 60.9 ± 1.51 | 68.6 ± 0.74* | 64.1 ± 0.57* | 66.1 ± 0.58* |
| k | 1.125 b | 1.158 c | 1.077 c | 0.945 a | 0.651 | 0.917 d | 0.806 c |
| Obs | 60.0 ± 0.77 | 50.9 ± 0.62 | 57.9 ± 0.20 | 66.8 ± 0.14 | 67.2 ± 0.52 | 60.0 ± 0.29 | 59.2 ± 1.53 |
N50 | Exp | 61.2 ± 1.12 | 52.6 ± 2.11 | 55.9 ± 1.72 | 61.0 ± 0.86* | 61.7 ± 2.78 | 55.6 ± 1.46* | 59.0 ± 0.25 |
| k | 0.922a | 1.449 a | 1.048 c | 0.757 b | 0.668 c | 0.995 c | 0.861 b |
| Obs | 62.1 ± 0.72 | 55.8 ± 0.44 | 52.1 ± 0.54 | 65.6 ± 0.54 | 63.9 ± 0.26 | 56.3 ± 0.16 | 60.5 ± 0.25 |
N100 | Exp | 59.4 ± 1.04 | 55.1 ± 0.91 | 56.2 ± 0.70* | 61.3 ± 0.83* | 58.7 ± 3.03 | 56.8 ± 2.08 | 58.6 ± 2.31 |
| k | 0.944 a | 1.076 cd | 1.396 a | 0.818 b | 0.746 ab | 1.095 b | 0.743 d |
| Obs | 60.6 ± 0.31 | 59.9 ± 0.16 | 61.9 ± 0.30 | 65.4 ± 0.66 | 67.9 ± 0.44 | 53.0 ± 0.17 | 61.6 ± 0.72 |
N150 | Exp | 61.6 ± 0.48 | 54.5 ± 0.59* | 57.4 ± 0.56* | 63.8 ± 1.29 | 59.0 ± 1.52* | 54.3 ± 1.50 | 55.4 ± 1.92* |
| k | 0.848 a | 0.946 d | 0.810 d | 0.812 b | 0.690 bc | 1.232 a | 0.724 d |