chlorothalonil

noun chlo·ro·thal·o·nil \ ˌklȯr-ə-ˈtha-lə-ˌnil \

Definition of chlorothalonil

:an organochlorine fungicide C8Cl4N2 that protects against a wide range of fungal diseases and is used especially on agricultural crops (such as peanuts and tomatoes)
  • And, although chlorothalonil is an excellent home garden fungicide, and oil sprays are highly effective against mites and other soft-bodied insects, the two are not compatible and cannot be combined or used within several days of each other.
  • —H. S. StevensDallas Morning News28 May 1999
  • … one of the most widely used fungicides on crops in the United States, chlorothalonil, raises mortality rates among frog tadpoles at low concentrations.
  • —Susan MiliusScience News11 Sept. 2010

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First Known Use of chlorothalonil

1973


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