1993•Weed TechnologyRequires access

Canada Thistle (Cirsium arvense) Control with Disking and Herbicides

Robert L. Zimdahl, G. R. W. Foster

Abstract

Studies from 1985 to 1989 showed that disking 3, 7, 10, 14, or 30 d after applying chlorsulfuron, clopyralid, dicamba, glyphosate, picloram, or 2,4-D did not improve Canada thistle control in uncropped, dryland fields. Disking after a fall or after a fall plus a spring herbicide application did not influence Canada thistle control for any herbicide regardless of the time of herbicide application or the time between application and disking.

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Key concepts: Thistle, Dicamba, Cirsium arvense, Clopyralid, Glyphosate, Agronomy, Picloram, Weed control