Nitrogen-fertilized pastures of Narok Setaria and Samford Rhodes grass give similar beef production in S.E. [South East] Queensland [Setaria sphacelata var sericea cv. Narok; Chloris gayana cv. Samford]
1989
Jones, R.J. (Commonwealth Scientific and Industrial Research Organization, Aitkenvale (Australia). Div. of Tropical Crops and Pastures)
Pastures fertilized with 250 kg single superphosphate, 125 kg KCl and 336 kg N per ha per yr were compared at a set stocking regime of 5 steers per ha over a 4-year period. Pastures of Narok gave higher yield of total pasture dry matter and of green dry matter on most sampling occasions. The N, P and K concentrations in the yield on offer were similar for both pastures, although N in the Samford Rhodes grass was higher than for Narok in summer-autumn. Despite differences in yield and mineral concentration the pattern of weight gain of steers was similar for both pastures in 3 of the 4 years although Narok tended to give reduced weight loss in winter and spring with Samford giving better weight gain in summer-autumn. The lack of difference in annual liveweight gains is discussed.
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