Compound EC50 R2 Reg. Eq MTI
Diuron 1.92  mg/l 0.82 Y=0.2302X+1.6336 Nd
Ciprofloxacin 0.71 mg/l 0.976 Y=0.7269X+1.8078 Nd
Tylosin 5.28 mg/l 0.984 Y=0.1906X+1.5612 Nd
Penicillin 0.13 mg/l 0.957 Y=0.0994X+1.7865 Nd
Penicillin 0.5: Tylosin 0.5=B1 0.077 TU 0.917 Y=19.94X+72.217 -3.701
Cipro 0.5: Tylosin 0.5=B2 0.103 TU 0.966 Y=41.612X+91.08 -2.294
Cipro 0.5: penicillin 0.5=B3 0.292 TU 0.83 Y=43.859X+73.46 -0.792
Penicillin 0.33: Tylosin 0.33:
Cipro 0.33=T
0.034 TU 0.988 Y=25.08X+86.718 -2.325
Table 3: Toxicity parameters of the tested compounds and Diuron.