Free Access
Table II
Mean values of 
and
, net N
mineralization and net nitrification (kg ha−1 month−1) in
mineral soil (0–10 cm) for different E. globulus post-harvesting
residue treatments and control during the two study-periods. The standard errors are
shown in brackets.
| (a) First study period (May 1994–December 1995) | ||||
|---|---|---|---|---|
| Treatment |
|
|
Net-Mineralization | Net-Nitrification |
| Control (uncut stand) | 40.60 a | 0.49 a | 32.37 a | 1.19 a |
| (13.31) | (0.49) | (8.04) | (1.47) | |
| Slash scattered | 49.50 ab | 0.80 a | 40.59 ab | 4.06 a |
| (7.21) | (0.42) | (12.28) | (10.95) | |
| Slash scattered | 54.68 bc | 0.99 a | 54.19 bc | 4.58 a |
| + fertilization | (8.29) | (0.91) | (11.13) | (1.85) |
| Windrowing | 49.6 ab | 0.70 a | 31.90 a | 2.87 a |
| (3.23) | (0.71) | (11.54) | (2.76) | |
| Broadcast burning | 64.04 c | 2.92 b | 77.88 d | 15.94 b |
| (8.58) | (2.30) | (13.61) | (13.20) | |
| Windrowing | 95.08 d | 2.38 b | 66.44 cd | 8.27 a |
| + burning | (13.04) | (0.63) | (31.14) | (6.86) |
|
|
||||
| (b) Second study period (September 2005–June 2006) | ||||
| Treatment |
|
|
Net-Mineralization | Net-Nitrification |
|
|
||||
| Control (uncut stand) | 31.50 a | 0.31 a | 18.71 a | 1.91 a |
| (2.22) | (0.05) | (0.39) | (1.70) | |
| Slash scattered | 31.41 a | 0.22 a | 20.12 a | 1.52 a |
| (1.60) | (0.10) | (0.42) | (1.58) | |
| Slash scattered | 31.00 a | 0.20 a | 17.40 a | 1.83 a |
| + fertilization | (2.31) | (0.16) | (0.68) | (2.00) |
| Windrowing | 30.82 a | 0.12 a | 18.15 a | 1.94 a |
| (1.95) | (0.02) | (0.71) | (1.36) | |
| Broadcast burning | 31.52 a | 0.53 a | 18.12 a | 2.31 a |
| (1.20) | (0.05) | (0.29) | (1.74) | |
| Windrowing | 31.63 a | 0.31 a | 18.51 a | 2.93 a |
| + burning | (1.70) | (0.06) | (1.31) | (2.03) |