Chemical parameters | Mean ± standard deviation Range: layer one (surface, around 0.5 ft) | Mean ± standard deviation Range: layer 2 (1.5 ft, sub-surface) |
---|---|---|
pH | 4.93 ± 0.98 | 4.91 ± 0.94 |
Total nitrogen | 0.28 ± 0.14 | 0.30 ± 0.19 |
OM | 3.57 ± 2.01 | 3.23 ± 1.88 |
K | 0.31 ± 0.27 | 0.46 ± 0.29 |
P | 6.48 ± 2.50 | 5.5 ± 1.20 |
S | 56.49 ± 42.66 | 45.02 ± 15.84 |
Fe | 10.49 ± 5.24 | 10.06 ± 5.55 |
As | 0.03 ± 0.05 | 0.03 ± 0.06 |