To get a sense of which herbicides can be used before a specific cover crop species and which can’t, Purdue University weed scientist Bryan Young compiled research from the University of Wisconsin, Purdue University, University of Missouri and Penn State University, as well as commercial research conducted by retired University of Illinois Extension agronomist Mike Plumer.

Numerous people have called to report carryover injury from applications of herbicides that contain fomesafen made last season.