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. 2016 May 10;5:565. doi: 10.1186/s40064-016-2264-8

Table 2.

Chemical characteristics of agricultural (AGRIC) and control (CON) soils (±SD)

Soil no. Land use Moisture (%) pH (H2O) TC (g kg−1) POXC (g kg−1) NH4-N (mg kg−1) NO3-N (mg kg−1) NO2-N (mg kg−1)
1 AGRIC 8.20 ± 0.20 5.23 ± 0.06 9.80 ± 0.002 0.716 ± 0.01 0.012 ± 0.06 9.34 ± 0.08 0.110 ± 0.03
CON 9.76 ± 0.11 6.27 ± 0.005 17.6 ± 0.12 0.546 ± 0.19 0.089 ± 0.05 1.68 ± 0.01 0.170 ± 0.01
2 AGRIC 9.30 ± 0.10 4.66 ± 0.02 12.3 ± 0.04 0.460 ± 0.03 0.017 ± 0.01 7.37 ± 0.05 0.082 ± 0.01
CON 11.16 ± 0.11 5.02 ± 0.02 14.0 ± 0.05 0.571 ± 0.01 0.041 ± 0.01 5.84 ± 0.03 0.103 ± 0.02
3 AGRIC 12.56 ± 0.06 6.98 ± 0.02 19.60 ± 0.05 0.760 ± 0.05 0.431 ± 0.05 18.25 ± 0.06 0.100 ± 0.04
CON 13.50 ± 0.10 7.08 ± 0.06 25.20 ± 0.14 0.946 ± 0.07 0.483 ± 0.02 7.57 ± 0.31 0.533 ± 0.03
4 AGRIC 6.60 ± 0.10 5.45 ± 0.04 10.10 ± 0.04 0.621 ± 0.03 0.072 ± 006 25.53 ± 0.18 0.116 ± 0.01
CON 12.56 ± 0.06 5.58 ± 0.04 20.60 ± 0.19 0.828 ± 0.06 0.689 ± 0.09 10.18 ± 0.15 0.208 ± 0.02
5 AGRIC 9.23 ± 0.05 4.78 ± 0.006 8.30 ± 0.09 0.559 ± 0.06 0.014 ± 0.07 20.26 ± 0.07 0.096 ± 0.04
CON 12.50 ± 0.08 5.58 ± 0.04 20.60 ± 0.19 0.828 ± 0.06 0.689 ± 0.09 10.20 ± 0.11 0.208 ± 0.02
6 AGRIC 12.13 ± 0.15 6.93 ± 0.006 9.70 ± 0.06 0.536 ± 0.08 0.05 ± 0.003 14.48 ± 0.04 0.036 ± 0.05
CON 12.76 ± 0.11 6.99 ± 0.03 34.90 ± 0.11 1.110 ± 0.03 0.412 ± 0.08 5.41 ± 0.14 0.866 ± 0.03
7 AGRIC 5.66 ± 0.11 5.13 ± 0.006 8.80 ± 0.06 0.507 ± 0.09 0.018 ± 0.09 4.96 ± 0.06 0.080 ± 0.02
CON 7.10 ± 0.17 5.40 ± 0.006 14.20 ± 0.11 0.575 ± 0.02 0.192 ± 0.08 1.75 ± 0.06 0.141 ± 0.01
8 AGRIC 5.80 ± 0.16 4.74 ± 0.02 9.10 ± 0.05 0.526 ± 0.01 0.128 ± 0.04 21.90 ± 0.02 0.091 ± 0.01
CON 10.40 ± 0.17 6.25 ± 0.03 18.00 ± 0.13 0.795 ± 0.05 4.938 ± 0.08 6.75 ± 0.05 0.102 ± 0.01
9 AGRIC 5.20 ± 0.17 4.18 ± 0.05 9.80 ± 0.07 0.496 ± 0.07 0.140 ± 0.04 2.99 ± 0.03 0.105 ± 0.02
CON 8.86 ± 0.11 5.64 ± 0.06 12.30 ± 0.08 0.621 ± 0.04 0.275 ± 0.03 2.19 ± 0.05 0.130 ± 0.01
10 AGRIC 10.86 ± 0.11 5.58 ± 0.06 9.70 ± 0.06 0.611 ± 0.05 0.049 ± 0.01 27.17 ± 0.14 0.095 ± 0.01
CON 12.51 ± 0.17 5.76 ± 0.01 15.90 ± 0.12 0.694 ± 0.07 3.389 ± 0.06 10.12 ± 0.07 0.862 ± 0.07