| Metal
(mg/kg) |
Irrigation water
A |
Biosolids
50 Mg ha-1
B |
Soil
(initial)
C |
A+B+C |
Available expected in soil† |
Uptake oat plant‡ |
Uptake from available§ |
| |
--------------------------------------- g ha-1----------------------------------% |
| Cd |
0.4 |
64.5 |
4,227 |
4,292 |
1,931 |
0.324 |
0.017 |
| Cr |
226.0 |
1,647.0 |
30,440 |
32,313 |
2,843 |
1.944 |
0.068 |
| Ni |
399.0 |
267.0 |
29,370 |
30,036 |
1,712 |
24.62 |
1.438 |
| Pb |
223.0 |
1,052.0 |
26,060 |
27,335 |
1,285 |
22.72 |
1.768 |
† Soluble & exchangeable fractions were 45, 8.8, 5.7, and 4.7% for Cd, Cr, Ni, Pb
‡ Based on 3.6t ha-1 dry basis and 4 harvest times
§ Proportion uptaken by plant from the amount expected as available in soils († column) |
