Metolachlor

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Metolachlor is a chloroacetanilide herbicide. It is a ground water contaminant, a possible carcinogen, and a suspected endocrine disruptor.[1] Pesticide Action Network lists it as a Bad Actor. Metolachlor causes slight acute toxicity with symptoms including headaches and nausea following inhalation and abdominal cramps following ingestion.[1] In California, it is most commonly used on corn, beans, and sorghum.[1] Metolachlor is made by Syngenta and sold under the trade names Dual, Dual Magnum, and Pennant Magnum.

Pollution of Waterways

According to a 1999 U.S. Geological Survey publication, metolachlor was among the top herbicides found in streams in both agricultural and urban areas.[2] In agricultural areas, breakdown products of metolachlor are more commonly found than metolachlor itself. "Unlike streams, however, metolachlor was seldom detected [in urban shallow ground water], probably because of its lower urban use and lower persistence in the environment compared to the other herbicides."[3]

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References

  1. 1.0 1.1 1.2 Metolachlor, Pesticide Info Database, Pesticide Action Network, Accessed September 29, 2011.
  2. Different pesticides dominate in different land-use areas, U.S. Geological Survey, Circular 1225, Accessed September 29, 2011.
  3. Different pesticides dominate in different land-use areas, U.S. Geological Survey, Circular 1225, Accessed September 29, 2011.

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