Table 3. A comparison of additive toxicity of binary and complex mixtures.
| Herbicide mixture | IC10 (TUsum) | 95% CV | IC50 (TUsum) | 95% CV |
|---|---|---|---|---|
| Diuron + diuron | 0.23 | 0.20–0.27 | 0.90a,b | 0.87–0.94 |
| Atrazine + atrazine | 0.17 | 0.14–0.20 | 0.95a | 0.90–1.0 |
| Diuron + atrazine | 0.15 | 0.12–0.18 | 0.85b | 0.81–0.90 |
| 10-herbicide-mix | 0.17 | 0.14–0.20 | 0.87a,b | 0.8–0.95 |
∆F/Fm’ IC10 and IC50 data (TU) of all four herbicide mixtures after 24 hr exposures. The proportions of each mixture are equal. For example the binary mixtures contain 50% v/v of each component while the 10-herbicide mix comprises 10% v/v of each herbicide. Different letters in superscript indicate significant differences in IC50 (p < 0.05). Note all ICx values are listed as TUsum values not concentrations.