|
Parameter
|
Treatment
|
|---|
| |
Control
|
Green cane
|
Burnt cane
|
|---|
|
pH
|
6.6a
|
6.4a
|
5.9b
|
|
Exchangeable Al
|
BD
|
BD
|
BD
|
|
Exchangeable Ca
|
11.4a
|
10.b
|
4.3c
|
|
Exchangeable Mg
|
3.9a
|
2.1b
|
1.6c
|
|
Exchangeable Na
|
1.7a
|
2.8a
|
BD
|
|
Exchangeable K
|
306.6b
|
735.6a
|
280.0b
|
|
Exchangeable H + Al
|
4.8b
|
5.0b
|
6.5a
|
|
Total P
|
102.3a
|
34.6ab
|
32.6b
|
|
SB1
|
16.1a
|
14.2b
|
6.6c
|
|
CEC2
|
20.9a
|
19.0b
|
13.1c
|
|
V3
|
77.0a
|
74.7a
|
50.4b
|
|
Bulk density
|
0.96 b
|
1.25a
|
1.31a
|
|
Moisture
|
29.2a
|
26.2a
|
27.6a
|
|
WFPS4
|
41.8 b
|
58.7a
|
64.9a
|
|
Total C
|
12.5a
|
6.7b
|
15.9a
|
|
Total N
|
0.70a
|
0.30b
|
0.90a
|
|
δ13C
|
−22.8a
|
−20.9b
|
−23.1a
|
|
δ15N
|
8.8b
|
11.4a
|
8.3b
|
|
C:N
|
17.9b
|
22.3a
|
16.4b
|
- The numbers represent average values (n = 3 for density and n = 5 for the rest). Averages followed by the same letter in each line are not statistically different (5%) from each other according to the Kolmogorov-Smirnov test for Ca, Mg, Na, K, P and V; and according to the Tukey test for the rest. BD - Below the detection limit of the technique. 1Sum of bases (sums of the Ca, Mg, Na and K content in cmolc dm-3). 2Cation exchange capacity (sums of SB and H + Al). 3Percent base saturation (SB divided by CEC). Parameters units: Al, Ca, Mg, H + Al, P, SB, CEC (cmolc dm-3), Na, K (mg dm-3), V (%), Bulk density (g kg-1), δ13C, δ15N (‰). 4 Water filled pore space.
