Alberta Pesticide Legislation, Safety, And Application Guidelines Practice Test

What is the maximum application rate for dichlorprop herbicide within 5-30 metres of a water body?

1.2 kg active ingredient/hectare 0.6 kg ai/ha 1.8 kg ai/ha 2.4 kg ai/ha

Correct Answer:

1.2 kg active ingredient/hectare

Explanation:

When applying herbicides near water, the rules reduce the allowed input to protect aquatic life. For dichlorprop within a 5–30 metre buffer from a water body, the maximum application rate is 1.2 kg active ingredient per hectare. This limit helps minimize the risk of runoff or drift reaching the water, while still permitting effective use when following the label. Rates higher than this would exceed what the label permits in that zone, and rates lower than this are allowed but simply aren’t the maximum applicable in this context. Always check the exact product label for any additional drift-reduction requirements and ensure compliance with provincial guidance.

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