April 23, 2019

The Back Page: Dicamba: A Dispatch from the Weed Wars

Jonathan P. Scoll

In the decades-long chemical arms race between farmer and weed, among the grower’s heavy weapons is dicamba, a powerful herbicide. Dicamba use has gained prominence recently in part due to the evolved resistance of major weed pests like waterhemp, Palmer amaranth (both Amaranthus spp.) and marestail, Conyza canadensis, to other popular herbicides, particularly Roundup.

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