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New Zealand Journal of Forestry Science
Fig. 4 | New Zealand Journal of Forestry Science

Fig. 4

From: Herbicide concentrations in waterways following aerial application in a steepland planted forest in New Zealand

Fig. 4

Concentrations of terbuthylazine (a) and hexazinone (b) measured in stream water at W1 and the two downstream sites (W2 and W3) during the trial period. The acceptable limits for the New Zealand (NZ) and World Health Organization drinking water standards for terbuthylazine are shown in a. The NZ drinking water standard for hexazinone of 400 μg L−1 is outside the range of b. There is no World Health Organization drinking water standard for hexazinone

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