nutrients Control soil Sewage sludge 1% Sewage sludge 3% Sewage sludge 5% Poultry manure 1% Poultry manure 3% Poultry manure 5%
NH4 0.27f 10.20de 46.17b 93.32a 3.87ef 16.34d 35.38c
NO3 3.00d 8.40cd 12.80c 20.29b 9.04cd 24.49b 56.45a
Na 4.47f 15.70e 38.64d 64.85c 69.19c 208.70b 332.90a
K 19.25e 22.5e 42.12d 54.81cd 69.06c 232.20b 376.40a
Ca 87.84f 103.60e 131.10d 152.70b 91.46f 139.10c 160.40a
Mg 33.96b 39.84b 37.24b 58.49a 40.33b 65.44a 71.78a