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. 2023 Nov 17;10:1274466. doi: 10.3389/fvets.2023.1274466

Table 3.

Load of Escherichia coli and Salmonella spp. and content of metals and non-metals of hydroponic barley forage (HBF) produced with reclaimed wastewater and with well water.

Parameter HBF produced with reclaimed wastewater HBF produced with well water
Escherichia coli, CFU/g <10 <10
Salmonella spp., CFU/g Not detected Not detected
Cadmium, mg/kg Cd <0.010 <0.005
Chromium, mg/kg Cr <0.010 0.039
Manganese, mg/kg Mn 2.70 3.317
Iron, mg/kg Fe 6.20 11.78
Nichel, mg/kg Ni 0.067 0.286
Lead, mg/kg Pb <0.010 0.03
Copper, mg/kg Cu 0.78 1.69
Zinc, mg/kg Zn 0.004 0.003
Total N, % 0.29 4.9
Calcium, mg/kg Ca 174.0 407.7
Phosphorus, mg/kg P 196.7 86.8
Magnesium, mg/kg Mg 150.0 316.7
Sodium, mg/kg Na 254.0 57.7
Potassium, mg/kg K 646.0 536.9