Table 4 Nutrient stocks in live and dead fine roots of hybrid poplars in relation to genotype and plantation environment.
Effects | C (kg/ha) | N (kg/ha) | P (kg/ha) | K (kg/ha) | Ca (kg/ha) | Mg (kg/ha) | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Live | Dead | Live | Dead | Live | Dead | Live | Dead | Live | Dead | Live | Dead | |
Genotype × Environment | ||||||||||||
DN × M/Brompton | 641 | 87.8 | 11.48 | 1.57 | 1.56 | 0.19 | 3.48 | 0.33 | 18.5 | 2.11 | 1.79 | 0.29 |
DN × M/La Patrie | 735 | 163.3 | 11.97 | 3.17 | 1.33 | 0.27 | 3.62 | 0.66 | 24.3 | 4.47 | 1.70 | 0.40 |
DN × M/Melbourne | 812 | 117.9 | 13.23 | 2.22 | 0.97 | 0.16 | 3.95 | 0.44 | 24.5 | 2.92 | 1.82 | 0.27 |
D × N/Brompton | 415 | 53.9 | 7.41 | 1.01 | 0.72 | 0.10 | 3.39 | 0.27 | 11.7 | 1.53 | 1.21 | 0.15 |
D × N/La Patrie | 616 | 144.0 | 11.47 | 2.89 | 1.05 | 0.26 | 3.79 | 0.72 | 17.9 | 4.08 | 1.70 | 0.36 |
D × N/Melbourne | 480 | 47.1 | 8.87 | 0.96 | 0.62 | 0.06 | 3.38 | 0.22 | 13.5 | 1.10 | 1.39 | 0.12 |
M × B/Brompton | 277 | 57.9 | 4.91 | 1.18 | 0.50 | 0.11 | 2.03 | 0.25 | 6.2 | 1.17 | 0.79 | 0.19 |
M × B/La Patrie | 626 | 103.7 | 9.85 | 1.92 | 0.98 | 0.17 | 3.20 | 0.41 | 15.7 | 2.20 | 1.47 | 0.27 |
M × B/Melbourne | 757 | 118.5 | 12.39 | 2.03 | 1.01 | 0.15 | 4.11 | 0.43 | 21.2 | 2.50 | 1.89 | 0.28 |
SE | 67 | 14.5 | 1.12 | 0.26 | 0.17 | 0.03 | 0.52 | 0.07 | 1.9 | 0.33 | 0.22 | 0.04 |
P-value | 0.06 | 0.03 | 0.05 | 0.02 | 0.06 | 0.06 | 0.38 | 0.03 | 0.04 | 0.005 | 0.15 | 0.13 |
Environment | ||||||||||||
Brompton | 444 | 66.5 | 7.93 | 1.26 | 0.93 | 0.14 | 2.97 | 0.28 | 12.1 | 1.60 | 1.26 | 0.21 |
La Patrie | 659 | 137.0 | 11.09 | 2.66 | 1.12 | 0.23 | 3.54 | 0.60 | 19.3 | 3.58 | 1.63 | 0.34 |
Melbourne | 683 | 94.5 | 11.50 | 1.74 | 0.87 | 0.13 | 3.81 | 0.36 | 19.7 | 2.17 | 1.70 | 0.22 |
SE | 39 | 8.4 | 0.65 | 0.15 | 0.10 | 0.02 | 0.30 | 0.04 | 1.1 | 0.19 | 0.13 | 0.02 |
P-value | 0.002 | 0.0003 | 0.004 | <0.0001 | 0.20 | 0.0005 | 0.17 | 0.0002 | 0.0005 | <0.0001 | 0.07 | 0.004 |
Genotype | ||||||||||||
DN × M | 729 | 123.0 | 12.23 | 2.32 | 1.29 | 0.21 | 3.68 | 0.48 | 22.4 | 3.17 | 1.77 | 0.32 |
D × N | 504 | 81.7 | 9.25 | 1.62 | 0.80 | 0.14 | 3.52 | 0.40 | 14.3 | 2.24 | 1.44 | 0.21 |
M × B | 553 | 93.3 | 9.05 | 1.71 | 0.83 | 0.15 | 3.11 | 0.36 | 14.4 | 1.95 | 1.38 | 0.24 |
SE | 39 | 8.4 | 0.65 | 0.15 | 0.10 | 0.02 | 0.30 | 0.04 | 1.1 | 0.19 | 0.13 | 0.02 |
P-value | 0.004 | 0.01 | 0.007 | 0.01 | 0.007 | 0.02 | 0.42 | 0.15 | 0.0002 | 0.002 | 0.11 | 0.02 |