Japanese stiltgrass (Microstegium vimineum) is an annual grass native to parts of Asia that has invaded many areas around the world. We conducted a study in Catoctin Mountain Park in Thurmont, Maryland, to determine if low rates of the grass-specific herbicide Sethoxydim were as effective as the label rate for spot treatment (1.5–2.25%) against M. vimineum. Sethoxydim E Pro was applied at 0.75%, 1.0%, and 1.5%. Treatments occurred in July 2011, 2012, and 2013. In September of 2011, 2012, and 2013 all treatments had reduced the cover of M. vimineum relative to the controls and there was no significant difference between the three treatments or the three groups of plots and no significant effect on other species. In July 2014, M. vimineum cover had rebounded substantially and by September 2014, cover of M. vimineum in treated plots was not significantly different from the controls.
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1 October 2015
Suppressing Japanese Stiltgrass (Microstegium vimineum) with the Grass-Specific Herbicide Sethoxydim
Mark Frey,
John Paul Schmit
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Natural Areas Journal
Vol. 35 • No. 4
October 2015
Vol. 35 • No. 4
October 2015
Control techniques
grass-specific herbicide
invasive species
Microstegium vimineum
