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Evaluating Herbicide Carryover on Cover Crops
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.
The research looked at Dual II Magnum (s-metolachlor) Zidua (pyroxasulfone), Valor (flumioxazin), Spartan (sulfentrazone), Flexstar (fomesafen) and Pursuit (imazethapyr) herbicides’ impact on cereal rye, annual ryegrass, radish and crimson clover. The following charts show the results.
Carryover: Cereal (Winter) Rye
Research conducted at the Univ. of WI (2013, 2014), Purdue Univ. (2013, 2014), Univ. of MO (2014) Penn State University estimates/experience (PSU; Curran and Lingenfelter) Mike Plumer estimates/experience (MP)
*Data interpreted by B. Young
Carryover: Annual Ryegrass
Research conducted at the Univ. of WI (2013, 2014), Purdue Univ. (2013, 2014), Univ. of MO (2014) Penn State University estimates/experience (PSU; Curran and Lingenfelter) Mike Plumer estimates/experience (MP)
*Data interpreted by B. Young
Carryover: Crimson Clover
Research conducted at the Univ. of WI (2013, 2014), Purdue Univ. (2013, 2014), Univ. of MO (2014) Penn State University estimates/experience (PSU; Curran and Lingenfelter) Mike Plumer estimates/experience (MP)
*Data interpreted by B. Young
Carryover: Radish
Research conducted at the Univ. of WI (2013, 2014), Purdue Univ. (2013, 2014), Univ. of MO (2014) Penn State University estimates/experience (PSU; Curran and Lingenfelter) Mike Plumer estimates/experience (MP)
*Data interpreted by B. Young
For more information, check out the article “Finding a Weed…
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