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The Center for Native Grasslands Management

Title: Yield, quality, and persistence of 13 accessions of Eastern Gamagrass at three southern locations
Year: 2002
Author(s): Douglas, J. L., Tharel, L. M., Owsley, C. M.
Source Title: Proceedings of the Third Eastern Native Grass Symposium
Source Type: Proceedings
pages: 248-255
Original Publication:  
Abstract: Thirteen southern eastern gamagrass genotypes have been identified as potential cultivars but forage production parameters are lacking. Objectives of this study were to determine yield, quality, and persistence of these 13 genotypes at three southern locations. Genotypes were established in 1995 in a randomized complete block with four replications at Americus, GA, Booneville, AR, and Coffeeville, MS and forage attributes and persistence determined for three consecutive years. Yields ranged from 7.5 to 19.1 Mg ha-1 depending on genotype, location, and year. When averaged over locations and years, accession 9062680 was the highest yielding genotype (17 MG ha-1). Cutting date and genotype influences forage quality estimates of CP, ADF, and NDF. Average CP ranged from 60 to 110 g kg-1 DM, ADF from 370 to 420 g kg-1 DM and NDF from 670 to 730 g kg-1 DM. Florida genotypes winter killed in 1997 at Booneville and Coffeeville but persisted at Americus. A Rhizoctonia and Pythium complex caused severe damage to all genotypes at Coffeeville except 9062680. Two genotypes, 9062680 and 9058495, were identified for future cultivar release.
Publisher: The North Carolina Botanical Garden, Chapel Hill, NC, October 1-3, 2002. Omnipress, Madison, WI
Editor(s): J. Randall