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.