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- Title
Effects of competition, herbicides and activated carbon on establishment of Australian grasses.
- Authors
Hagon, M. W.
- Abstract
The establishment of four Australian native grasses, <em>Themeda australis</em> (R.Br) Stapf, <em>Bothriochloa macra</em> (Steud) S.T. Blake, <em>Danthonia</em> spp. and <em>Stipa bigeniculata</em> Hughes, was investigated in a weedy soil under glasshouse conditions at Canberra, Australia. The presence of weeds (approximately 3500/m²) significantly reduced the percentage emergence of <em>Danthonia</em> and <em>Stipa</em> but had no effect on <em>Themeda, Bothriochloa</em> or the pasture species <em>Lolium perenne</em> L. (ryegrass). The percentage reduction in dry matter production after 8 weeks in the presence of weeds was less for <em>Themeda</em> and <em>Bothriochloa</em> (65%) than for <em>Stipa</em> and ryegrass (80%), while <em>Danthonia</em> production was reduced by over 90% Chlorthal-dimethyl at 6 or 12 kg/ha reduced the number of emerged seedlings of <em>Danthonia</em> and <em>Stipa</em> but had no effect on emergence of <em>Themeda</em> and <em>Bothriochloa</em>. Diuron at 4 and 16 kg/ha was toxic to seedlings of all four species. The application of activated carbon as a band or a seed pellet overcame the toxic effects of both herbicides, at least at the lower rates of application. The results are discussed in relation to the establishment of native grasses on urban areas requiring low maintenance.
- Subjects
GRASSES; KANGAROO grass; THEMEDA; DANTHONIA; STIPA; WEEDS; WEED science
- Publication
Weed Research, 1977, Vol 17, Issue 5, p297
- ISSN
0043-1737
- Publication type
Article
- DOI
10.1111/j.1365-3180.1977.tb00482.x