Figure 3

Frequency distribution of model distribution ratios (MDR) for herbicidal combination products. MDR was calculated based on the data set "most similar endpoints" using non-censored data only. Black represents products containing active substances with similar and white those with at least two active substances with dissimilar pesticidal modes of action. MDR values smaller than 1 indicate that the product is less and MDR values greater than 1 indicate that the product toxicity more toxic than predicted, respectively. A, algal growth inhibition (n = 53); B, Lemna growth inhibition (n = 28); C, Daphnia acute toxicity (n = 29); D, fish acute toxicity (n = 30); E, Daphnia chronic toxicity (n = 24); F, fish chronic toxicity (n = 16).