Effect of low rates of flupropanate on selective removal of serrated tussock (Nassella trichotoma (Nees) Arech.) seedlings from a young improved pasture

M.H. Campbell, NSW Agriculture, Orange Agricultural Institute, Orange, New South Wales 2800, Australia.


An 18 month-old improved pasture infested with 8-18 month-old serrated tussock (Nassella trichotoma (Nees) Arech.) seedlings near Berridale New South Wales was sprayed with rates of flupropanate from 0.19 to 1.12 kg a.i. ha-1 on 6 September 1995. Rates of 0.19, 0.37 and 0.56 kg a.i. ha-1 killed 53, 95 and 100% respectively of the serrated tussock seedlings without damaging sown pasture species (subterranean and white clovers, phalaris, fescue and cocksfoot). It is necessary to spray in spring or summer because subterranean clover, the improved species most susceptible to flupropanate, is more tolerant then than in autumn or winter.


Plant Protection Quarterly (1997) 12 (4) 175-176.