Mg Ca K Na NH4-N Soil Columns
1.18 0.71 0.31 2.86 0.74 Control soil
1.27 1.01 0.90 3.70 0.54 Sewage sludge 1%
1.12 0.70 0.93 3.16 0.40 Sewage sludge 3%
0.66 0.69 1.06 3.26 0.39 Sewage sludge 5%
1.48 0.99 0.64 2.42 0.47 Poultry manure 1%
0.66 0.75 0.47 1.95 0.30 Poultry manure 3%
0.90 0.52 0.82 2.11 0.43 Poultry manure 5%
1.03 0.76 0.73 2.78 0.47 Mean