Characteristics Sewage sludge Poultry manure
pH 6.83 7.27
EC (dS/m) 4.95 12.72
Total N (%) 3.05 1.47
C (%) 19.45 28.35
C/N 6.40 19.28
NH4-N (mg/kg) 4760 780
NO3-N (mg/kg) 299 595
Total Na (mg/g) 2.10 10.20
Total K (mg/g) 4.50 48.60
Total Ca (mg/g) 42.10 37.80
Total Mg (mg/g) 11.40 14.00
Exchangeable Na (cmolc/kg) 1.12 6.90
Exchangeable K (cmolc/kg) 0.59 0.64
Exchangeable Ca (cmolc/kg) 42.40 34.00
Exchangeable Mg (cmolc/kg) 12.00 6.00