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Grassland Response to Herbicides and Seeding of Native Grasses 6 Years Posttreatment

  • Bryan A. Endress (a1), Catherine G. Parks (a2), Bridgett J. Naylor (a2), Steven R. Radosevich (a3) and Mark Porter (a4)...

Abstract

Herbicides are the primary method used to control exotic, invasive plants. This study evaluated restoration efforts applied to grasslands dominated by an invasive plant, sulfur cinquefoil, 6 yr after treatments. Of the five herbicides we evaluated, picloram continued to provide the best control of sulfur cinquefoil over 6 yr. We found the timing of picloram applications to be important to the native forb community. Plots with picloram applied in the fall had greater native forb cover. However, without the addition of native perennial grass seeds, the sites became dominated by exotic grasses. Seeding resulted in a 20% decrease in exotic grass cover. Successful establishment of native perennial grasses was not apparent until 6 yr after seeding. Our study found integrating herbicide application and the addition of native grass seed to be an effective grassland restoration strategy, at least in the case where livestock are excluded.

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Corresponding author

Corresponding author's E-mail: cparks01@fs.fed.us

References

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