Range of Combination Index | Description | Graded Symbols | Graphic Symbols |
---|---|---|---|
<0.1 | Very strong synergism | +++++ | |
0.1–0.3 | Strong synergism | ++++ | |
0.3–0.7 | Synergism | +++ | |
0.7–0.85 | Moderate synergism | ++ | |
0.85–0.90 | Slight synergism | + | |
0.90–1.10 | Nearly additive | ± | |
1.10–1.20 | Slight antagonism | – | |
1.20–1.45 | Moderate antagonism | – – | |
1.45–3.3 | Antagonism | – – – | |
3.3–10 | Strong antagonism | – – – – | |
>10 | Very strong antagonism | – – – – – |