Table 3.
Soil nutrient composition (in mg/kg) in the different land use in Usangu agro-ecosystem, Mbarali District-Tanzania.
| Land Use | Al | Ca | Cu | Fe | K | Mg | Mn | P | S | Zn | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Conserved areas | 214.9 | 919.7 | 1.8 | 174.8 | 500.1 | 301.0 | 152.9 | 13.5 | 16.7 | 3.5 |
| Maize farming | 193.6 | 1362.6 | 0.7 | 107.0 | 647.1 | 286.9 | 220.5 | 25.7 | 23.1 | 3.6 | |
| Paddy farming | 294.1 | 806.9 | 2.0 | 214.8 | 399.8 | 238.6 | 137.0 | 7.7 | 22.4 | 2.1 | |
| Minimum | Conserved areas | 125.4 | 194.8 | 0.2 | 97.9 | 113.0 | 116.0 | 25.8 | 1.0 | 5.4 | 1.6 |
| Maize farming | 124.9 | 1318.6 | 0.5 | 91.6 | 612.5 | 253.5 | 169.1 | 15.2 | 15.5 | 3.2 | |
| Paddy farming | 93.2 | 95.1 | 0.1 | 81.1 | 28.8 | 42.2 | 12.8 | 0.5 | 2.1 | 0.3 | |
| Maximum | Conserved areas | 337.5 | 2010.7 | 3.7 | 314.1 | 1087.1 | 520.2 | 312.6 | 35.8 | 29.5 | 7.5 |
| Maize farming | 278.2 | 1415.2 | 1.0 | 127.8 | 678.2 | 316.9 | 241.0 | 40.3 | 39.0 | 4.1 | |
| Paddy farming | 793.0 | 2494.4 | 7.2 | 470.6 | 1484.2 | 1069.2 | 503.1 | 49.9 | 128.8 | 5.5 |