Table 2.
Organic carbon in water-stable aggregates.
Treatment | % Organic C in WSA |
|||
---|---|---|---|---|
LMA; >2 mm | SMA; >250 μm–2 mm | MiA; 53–250 μm | SCA; < 53 μm | |
Control | 3.40cd | 1.26ab | 0.17abc | 0.13abc |
Lime | 3.65d | 0.96a | 0.09a | 0.079ab |
AS70 | 1.52a | 2.67c | 0.86e | 0.37d |
AS211 | 2.58abcd | 2.02abc | 0.47cd | 0.24cd |
AN70 | 1.91abc | 2.02abc | 0.39bcd | 0.15abc |
AN211 | 1.67ab | 2.49c | 0.65de | 0.25cd |
AS70L | 3.41cd | 1.35ab | 0.22abc | 0.064a |
AS211L | 2.08abcd | 2.31bc | 0.53d | 0.22bc |
AN70L | 3.34bcd | 1.58abc | 0.15ab | 0.15abc |
AN211L | 3.07abcd | 1.48abc | 0.12ab | 0.067ab |
p value | <.001 | <.001 | <.001 | <.001 |
Values followed by a different lowercase letter in the same column are significantly different (p < 0.05) according to Tukey's LSD procedure. C = control (0 kg/ha), L = lime (2250 kg ha−1), AS70 = ammonium sulphate at 70 kg ha−1; AS211 = ammonium sulphate at 211 kg ha−1; AN70 = ammonium nitrate at 70 kg ha−1; AN211 = ammonium nitrate at 211 kg ha−1; AS70L = ammonium sulphate at 70 kg ha−1 + lime; AS211L = ammonium sulphate at 211 kg ha−1 + lime; AN70L = ammonium nitrate at 70 kg ha−1 + lime and AN211L = ammonium nitrate at 211 kg ha−1 + lime.