Parameter

Treatment



Control

Green cane

Burnt cane


pH

6.6^{a}

6.4^{a}

5.9^{b}

Exchangeable Al

BD

BD

BD

Exchangeable Ca

11.4^{a}

10.^{b}

4.3^{c}

Exchangeable Mg

3.9^{a}

2.1^{b}

1.6^{c}

Exchangeable Na

1.7^{a}

2.8^{a}

BD

Exchangeable K

306.6^{b}

735.6^{a}

280.0^{b}

Exchangeable H + Al

4.8^{b}

5.0^{b}

6.5^{a}

Total P

102.3^{a}

34.6^{ab}

32.6^{b}

SB^{1}

16.1^{a}

14.2^{b}

6.6^{c}

CEC^{2}

20.9^{a}

19.0^{b}

13.1^{c}

V^{3}

77.0^{a}

74.7^{a}

50.4^{b}

Bulk density

0.96 ^{b}

1.25^{a}

1.31^{a}

Moisture

29.2^{a}

26.2^{a}

27.6^{a}

WFPS^{4}

41.8 ^{b}

58.7^{a}

64.9^{a}

Total C

12.5^{a}

6.7^{b}

15.9^{a}

Total N

0.70^{a}

0.30^{b}

0.90^{a}

δ^{13}C

−22.8^{a}

−20.9^{b}

−23.1^{a}

δ^{15}N

8.8^{b}

11.4^{a}

8.3^{b}

C:N

17.9^{b}

22.3^{a}

16.4^{b}

 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 KolmogorovSmirnov 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. ^{1}Sum of bases (sums of the Ca, Mg, Na and K content in cmol_{c} dm^{3}). ^{2}Cation exchange capacity (sums of SB and H + Al). ^{3}Percent base saturation (SB divided by CEC). Parameters units: Al, Ca, Mg, H + Al, P, SB, CEC (cmol_{c} dm^{3}), Na, K (mg dm^{3}), V (%), Bulk density (g kg^{1}), δ^{13}C, δ^{15}N (‰). ^{4} Water filled pore space.