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The Center for Native Grasslands Management

Title: Native warm-season grass establishment as affected by weed control in the Maryland coastal plain
Year: 2000
Author(s): Meyer, G. C., Melvin III, N. C., Turner, T. R., Swartz, H. J.
Source Title: Proceedings of the 2nd Eastern Native Grass Symposium
Source Type: Proceedings
pages: 212-221
Original Publication:  
Abstract: There are numerous warm-season grass species native to the Mid-Atlantic Coastal Plain of Maryland. However, few regional species are commercially available and little research has focused on their successful direct seeding establishment. Reliable establishment research procedures for native WSG species will promote their use in ecological restoration. Because weed control is often critical to WSG establishment, our objective was to evaluate the effect of four weed control practices on establishment of beaked panicum, purpletop, and Indiangrass collected in the Mid-Atlantic Coastal Plain. Treatments used for 2-yr establishment study at two sites were 1)infrequent mowing regime (once per season), 2)frequent mowing regime, and 3)frequent mowing the first year with a broadleaf herbicide mixture (2,4-D, MCPP, and Dicamba) applied in the second year, 4) frequent mowing in the first year with an imidazolinone herbicide applied in the second year, and 5) a control. Stand density was recorded in September of the seeding year and monthly from June to September during the second growing season at both research sites. Indiangrass averaged a minimum stand density of 11 or more plants per meter squared with all weed control practices including the control. Results indicate that all weed control treatments produced significantly higher stand densities as well as higher tiller numbers than the control. Therefore, even minimal weed control, such as one mowing per season, significantly reduced weed competition improving WSG stand establishment in the Mid-Atlantic Coastal Plain over two growing seasons for the species tested.
Publisher: Agricultural Research Service and Natural Resource Conservation Service, Beltsville, MD
Editor(s): J. R. Ritchie