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Alachlor is a chloroacetanilide herbicide. It is a carcinogen, ground water contaminant, developmental or reproductive toxin, and a suspected endocrine disruptor.[1] Pesticide Action Network lists it as a Bad Actor pesticide. In California, alachlor is most commonly used on corn and beans.[1] It causes slight acute toxicity.[1] Alachlor is made by Monsanto and sold under the trade name Lasso.

Pollution of Waterways

According to a 1999 U.S. Geological Survey publication, alachlor was among the top herbicides found in streams in agricultural areas.[2] However, in shallow groundwater in agricultural areas, it is more common to find breakdown products of alachlor than finding alachlor itself.

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  1. 1.0 1.1 1.2 Alachlor, 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.

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