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Propagation of Hybrid Bermudagrasses from Harvested Culms

Tennessee Technological Univ., School of Agriculture, Box 5034, Cookeville, TN 38505
Richmond, VA 23233
Louisiana State Univ. Agric. Center (LSUAC), Louisiana Agric. Exp. Stn. (LAES), Calhoun Research Station, Calhoun, LA 71225

J. M. Turpin and M. M. Eichhorn

LSUACLAES, Hill Farm Res. Stn., Homer, LA 71040

^* Corresponding author.

Production of hybrid bermudagrass [Cynodon dactylon (L.) Pers.] requires stand establishment by vegetative means. Sprigs (rhizomes and rooted stolons) are the method of choice, but vegetative culms (cuttings) are often used because of lower planting material costs. Two studies, one in raised beds in a greenhouse (1987 and 1989) and one under field conditions (1989), were conducted during the summers of those yean to investigate differences in survival of cuttings from four hybrid bermudagrass cultivars at 2, 4, 6, 8, and 10 wk of age. In raised beds, percent survival of Coastal (4%) was higher than Grazer (31%) and Tiffon-44 (24%); Brazos (41%) was higher than Tiffon-44. Cutting length and number of nodes were related to survival and reduced the proportion of variation in percent survival attributable to cutting age when included in analysis of variance models as covariates. Grazer and Brazos bad higher survival than Coastal and Tifton-44 after adjusting data for cutting length. A cultivar-x-age interaction affected survival in the field study. All the above results were significant at P < 0.05. Analysis of data by cultivar resulted in significant effects of age on survival of Brazos clippings, and no effect (P > 0.05) of age on survival of other cultivars.

Received for publication June 11, 1990.