Efficacy of herbicides against serrated tussock (Nassella trichotoma) in a pot trial

Alice MellandA and David McLarenB

AUniversity of Melbourne, parkville, Victoria 3052, Australia.

B Keith Turnbull Research Institute, PO Box 48, Frankston, Victoria 3199, Australia.


Eleven herbicides were tested for their effect on serrated tussock in a pot trial. The herbicides trialled were Frenock® (currently registered for control of serrated tussock), Roundup®, Touchdown® Broadacre, Correct®, Arsenal®, Spinnaker®, Flowable Gesaprim® and the experimental compounds SL-160, ET-751, AC263222 and AC299263.

It was concluded that the broad spectrum herbicides Roundup and Touchdown Broadacre may provide rapid and cheap control of serrated tussock in integrated management strategies. Correct displayed results that warrant further investigation into its efficacy in the field as a cheaper selective herbicide than Frenock. Although successful, Arsenal is not considered as a viable selective herbicide because of its high cost and possible detrimental effects on off-target species. SL-160, AC299263 and AC263222 all displayed promising results and if developed and registered, may be useful in the control of serrated tussock.


Plant Protection Quarterly (1998) 13 (2) 102.