Table 2.
a, b ETU, total, available Mn and Zn content and ratio Mn (Zn) avail/tot in soils of banana plantations (B1–B6), agro forestry systems (AF), succesion forest (S) at depths 0–10 cm and 10–30 cm
| Site | ETU (mg kg−1) | Mn tot (mg kg−1) | Mn avail (mg kg−1) | Mn avail/Mn tot % | Zn tot (mg kg−1) | Zn avail (mg kg−1) | Zn avail/Zn tot % |
|---|---|---|---|---|---|---|---|
| (a) 0–10 cm | |||||||
| S1 | ND | 507a + 38.5 | 45.1d + 7.1 | 8.89c ± 1.1 | 101b + 15.9 | 0.4a + 0.2 | 0.41a ± 0.1 |
| S2 | ND | 474a + 72.3 | 3.1ab + 0.7 | 0.66a ± 0.1 | 81.6a + 7.2 | 0.2a + 0.02 | 0.34a ± 0.1 |
| AF1 | ND | 626b + 90.7 | 19.6c + 4.8 | 3.13b ± 0.9 | 77.6a + 7.5 | 1.6b + 0.4 | 2.07c ± 0.6 |
| AF2 | ND | 704b + 98.9 | 8.4ab + 6.5 | 1.20ab ± 1.0 | 98.2b + 6.4 | 1.4b + 0.3 | 1.44b ± 0.3 |
| B1 | <0.01 | 784b + 111 | 6.7ab + 9.4 | 0.86ab ± 0.9 | 91.9b + 9.1 | 1.2ab + 0.7 | 1.33b ± 0.6 |
| B2 | <0.01 | 651b + 66.9 | 14.3bc + 7.6 | 2.2b ± 1.3 | 77.3a + 5.8 | 1.3ab + 0.9 | 1.69b ± 1.0 |
| B3 | <0.01 | 718b + 57.5 | 7.9ab + 3.9 | 1.11ab ± 0.6 | 80.8a + 9.5 | 1.2ab + 0.2 | 1.47b ± 0.3 |
| B4 | <0.01 | 749b + 61.9 | 1.8a + 0.7 | 0.25a ± 0.1 | 83.6a + 7.8 | 1.0ab + 0.3 | 1.24b ± 0.2 |
| B5 | <0.01 | 774b + 108 | 1.6a + 0.3 | 0.21a ± 0.1 | 96.2b + 35.6 | 0.6a + 0.1 | 0.61a ± 0.2 |
| B6 | <0.01 | 707b + 106 | 2.6ab + 1.9 | 0.38a ± 0.3 | 91.9b + 20.2 | 0.4a + 0.1 | 0.47a ± 0.1 |
| (b) 10–30 cm | |||||||
| S1 | ND | 489a + 30.0 | 41.9d + 8.5 | 8.57c ± 1.3 | 90.9b + 3.5 | 0.2a + 0.1 | 0.26a ± 0.1 |
| S2 | ND | 547ab + 109 | 5.6ab + 4.3 | 1.02ab ± 0.8 | 81.5b + 9.6 | 0.1a + 0.3 | 0.15a ± 0.1 |
| AF1 | ND | 650b + 214 | 17.8c + 4.2 | 2.72b ± 1.3 | 82.9b + 9.7 | 1.0c + 0.2 | 1.28b ± 0.2 |
| AF2 | ND | 684b + 84.0 | 3.1a + 1.1 | 0.46a ± 0.2 | 95.3b + 8.1 | 0.6b + 0.1 | 0.66a ± 0.1 |
| B1 | <0.01 | 755b + 73.8 | 3.4a + 2.5 | 0.45a ± 0.3 | 91.9b + 22.2 | 0.3a + 0.2 | 0.35a ± 0.2 |
| B2 | <0.01 | 628b + 95.0 | 12.3b + 1.6 | 1.96b ± 0.6 | 71.7a + 5.0 | 0.7b + 0.2 | 1.0b ± 0.3 |
| B3 | <0.01 | 713b + 124 | 6.4ab + 4.2 | 0.9ab ± 0.5 | 81.6b + 11.0 | 0.5ab + 0.2 | 0.59a ± 0.2 |
| B4 | <0.01 | 714b + 35.2 | 1.5a + 0.7 | 0.22a ± 0.1 | 80.4b + 4.5 | 0.3a + 0.1 | 0.43a ± 0.1 |
| B5 | <0.01 | 834b + 96.6 | 1.8a + 0.3 | 0.21a ± 0.1 | 85.5b + 3.3 | 0.3a + 0.05 | 0.34a ± 0.1 |
| B6 | <0.01 | 622b + 107 | 2.5a + 1.6 | 0.4a ± 0.3 | 83.3b + 6.7 | 0.3a + 0.09 | 0.38a ± 0.1 |
Means and standard deviation, significant differences (p < 0.05): a < b < c < d), n = 5: avail available, tot total, ND no data