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The Center for Native Grasslands Management

Title: Bahia grass conversion to native warm-season grasses
Year: 2002
Author(s): Barnes, T. G., Washburn, B.
Source Title: Proceedings of the Third Eastern Native Grass Symposium
Source Type: Proceedings
pages: 71
Original Publication:  
Abstract: Bahia grass is an exotic, South American species which has been widely planted as a pasture and right-of-way grass. It is a dense, sod-forming species that can rapidly spread to exclude most native plants and provides little food for wildlife except wild turkeys. The objective of this study was to evaluate the efficacy of several herbicides for eradicating bahia grass and to establish the native warm season grasses. The study was conducted at the Santee Cooper Diversion project located in the coastal plain physiographic province. The completely randomized block experiment was conducted on dredge spoil soils (ph 6.5, 2.2% OM, 85% sand, 10% silt, 5% clay). Prior to implementing the treatments the site was burned to remove any standing biomass and litter. The following treatments were evaluated: 1) two quarts glyphosate per acre, 2) twelve ounces impazapic per acre, 3) two quarts glyphosate follwed by four ounces imazapic per acre at seeding, 4) two quarts glyphosate followed by twelve ounces imazapic at seeding, 5) one pint clethodim followed by four ounces imazapic at seeding, 6) one pint clethodim followed by eight ounces imazapic at seeding, and 7) an untreated check. One quart of non-ionic surfactant and two and one-half pounds of ammonium sulfate/acre were added to each herbicide treatment. Approximately one month after initial herbicide treatment the plots were broadcast seeded with a mixture of two pounds PLS each of big bluestem, little bluestem, and indiangrass. Plots were sampled at the end of the first and second growing seasons using 5, one m2 plots. We collected information on the percent total vegetative cover, percent bahia grass, # NWSG seedlings in year one, %NWSG, % bare ground, and plant species richness.
Publisher: The North Carolina Botanical Garden, Chapel Hill, NC, October 1-3, 2002. Omnipress, Madison, WI
Editor(s): J. Randall