Butachlor is a herbicide of the acetanilide class.. It is used as a selective pre-emergent herbicide to control annual grasses and some broad-leaved weeds. It was introduced circa 1970.PPDB, retrieved 1-2025-March It is extensively used in India in the form of granules and emulsifiable concentrate in rice as post emergence herbicide, and was sold in India in 2005-06, declining to in 2009-10.Choudhury PP, Singh R, Ghosh D and Sharma AR. 2016. Herbicide Use in Indian Agriculture. ICAR - Directorate of Weed Research, Jabalpur, Madhya Pradesh, 110 p. https://dwr.icar.gov.in/Downloads/Information_Bulletin/Information%20Bulletin%20No%20-%2022%20-%20Herbicide%20Use%20in%20Indian%20Agriculture.pdf
It is used in Uganda.
Butachlor's herbicide mode of action is to prevent formation of very long chain fatty acids; this makes its HRAC classification Group K (Australia), Group K3 (global) and Group 15 (numeric).
Application Butachlor is typically applied at 1.25-2 kg/ha active ingredient.
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