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Japanese Stiltgrass (Microstegium vimineum) Management for Restoration of Native Plant Communities

Published online by Cambridge University Press:  20 January 2017

Caren A. Judge ,
Joseph C. Neal  and
Theodore H. Shear
Caren A. Judge*
Affiliation:
BASF Corporation, 26 Davis Drive, Research Triangle Park, NC 27709
Joseph C. Neal
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609
Theodore H. Shear
Affiliation:
Department of Forestry, North Carolina State University, Raleigh, NC 27695-8008
*
Corresponding author's E-mail: carrie.judge@basf.com
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Abstract

Japanese stiltgrass is a nonnative invasive grass occupying a range of habitats in the eastern United States. Conventional management recommendations include hand-removal, mowing, or a nonselective herbicide application in autumn prior to flowering. However, no study has directly compared the ecological impacts of long-term management strategies on Japanese stiltgrass populations or recruitment and establishment of native flora. An experiment was initiated in 2002 and continued for three growing seasons in mixed pine-hardwood forests in central North Carolina. Conventional treatments included hand-removal, mowing, or an application of glyphosate (1.1 kg ai/ha) once in autumn, and selective removal by hand or fenoxaprop-P (0.19 kg ai/ha) season-long as needed. All treatments were compared to nontreated plots. Percent vegetation cover by species was recorded twice annually. Data were aggregated into five classes; Japanese stiltgrass, other exotic plants, native forbs, native monocots, and native woody plants. The soil seed bank of all species was estimated annually by extracting soil cores and documenting seedling emergence. All Japanese stiltgrass management treatments significantly reduced Japanese stiltgrass cover and seed bank over time compared to no management. However, recruitment and reestablishment of native plants and overall species richness were greater with selective Japanese stiltgrass management treatments including both hand-removal and fenoxaprop-P. Relative cover of other exotic plants decreased 2% to 49% after 3 yr with all Japanese stiltgrass management treatments except season-long hand-removal, which increased relative cover of other exotic plants 51%.

Keywords

Japanese stiltgrass, Microstegium vimineum (Trin.) A. Camus MCGVMFenoxaprop-Pglyphosateinvasivenontarget impactssoil seed bankspecies richness
Type
Research Articles
Information
Invasive Plant Science and Management , Volume 1 , Issue 2 , April 2008 , pp. 111 - 119
Copyright
Copyright © Weed Science Society of America 

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