Tropical Grasslands (1991) Volume 25, 245252
Evaluation of bred populations and cultivars of Setaria sphacelata
Division of Tropical Crops and Pastures, CSIRO, Brisbane, Queensland, Australia
Setaria sphacelata (setaria) is a widely sown pasture grass in wetter regions of the sub-tropics and tropics of Australia and elsewhere. The species is extremely variable, and it was considered that there were opportunities for improving yield in the cool season, winter greenness, digestibility and seed production by breeding. Sward trials are described in which 13 populations of setaria were grown with nitrogen fertiliser or with a legume at two sites. in southeast Queensland, for three years. The setarias included nine advanced breeding populations. one accession and the cultivars Nandi, Narok and Kazungula. Plots were harvested at c. 6-weekly intervals. Dry matter yield and inflorescence numbers were recorded, as well as winter-greenness following frosting. For several harvests, in vitro digestibility and percentage stem were also measured.