Impact of serrated tussock on agriculture

Serrated tussock:

  • Can cause pastures that normally carry 7 – 15 dry sheep equivalents (DSE) per hectare to be reduced to a carrying capacity of only 0.5DSE per hectare if heavily infested.
  • Is estimated to cost more than $40 million per year in control and lost production in NSW alone.
  • Is unpalatable to livestock and of low nutritional value, with plant digestabilities in the range of 30% - 51%.
  • Can cause indigestible balls in the rumen of grazing animals leading to a loss of condition and death.
  • Is a contaminant of hay, machinery and equipment and can remain viable in the gut of livestock for up to 10 days.  All these mechanisms have the potential to spread serrated tussock over long distances.

Source: "Serrated tussock - national best practice manual"