Information
Key Findings
- Only 0.5% of applied atrazine moved deeper than 0.20m into the soil, where it dissipated rapidly.
- In runoff (including suspended sediment) atrazine concentrations were greatest during the first runoff event (57 days after application) (85 μg/L) and declined with time.
- Even after 98% of the KCl-extractable atrazine had dissipated (and no longer provided weed control), runoff concentrations still exceeded the human health guideline value of 40 μg/L.
Key tables and figures extracted from data, literature and miscellaneous publications