Table 3 Values of pHH2O, electrical conductivity (EC), sum of exchangeable cations (SEC), cation-exchange capacity (CEC), total carbon (C), total nitrogen (N), total phosphorus (P), total microbial activity (FDA), and AMF spores density of non-sterile sandy soils amended with different doses of peanut shells (0, 4, 6, and 8 t ha−1)
Peanut shells (t ha−1) | pHH2O | EC (mS cm−1) | SEC (meq%) | CEC (meq%) | C (mg kg−1) | N (mg kg−1) | P (mg kg−1) | FDA (μg fluorescein g soil−1 h−1) | AMF spores density (spores 100 g soil−1) |
|---|---|---|---|---|---|---|---|---|---|
0 | 6.1 ± 0.2a | 3.08 ± 1.01b | 5.9 ± 1.9a | 2.67 ± 0.25a | 49.8 ± 11.0a | 4.8 ± 1.3a | 51.0 ± 12.3a | 0.89 ± 0.33a | 169 ± 22b |
4 | 6.1 ± 0.2a | 2.80 ± 1.07b | 6.9 ± 1.7ab | 3.15 ± 0.20b | 85.0 ± 13.9b | 6.6 ± 2.1b | 67.4 ± 18.8b | 4.31 ± 1.10b | 29 ± 12a |
6 | 6.2 ± 0.3a | 2.41 ± 0.42b | 7.8 ± 1.9ab | 3.23 ± 0.24b | 106.2 ± 18.4bc | 7.5 ± 1.7bc | 76.0 ± 15.3bc | 4.89 ± 1.21bc | 19 ± 9a |
8 | 6.6 ± 0.4b | 1.24 ± 0.21a | 8.1 ± 1.7b | 3.27 ± 0.27b | 126.8 ± 19.0c | 8.7 ± 1.5c | 84.3 ± 14.1c | 5.74 ± 0.71c | 15 ± 8a |