Herbicides for Chilean Needle Grass Control

These herbicide recommendations are made subject to the product being registered for that purpose under relevant legislation. It is the user's responsibility to check that registration or an off-label permit covers the proposed use. Always read the herbicide label.

If in doubt, visit the Australian Pesticides and Veterinary Medicines Authority (APVMA) website at www.apvma.gov.au.
Only herbicides registered for use in pasture and / or non-cropping situations are listed in the following table. For recommendations in specific crops consult an agronomist.

Care must be taken in using herbicides as non-target plants contacted may be harmed.

Wetting ag​​ents

Carefully consult the product label for specific directions regarding the use of wetting agents or adjuvants.

Waterways a​​nd wetlands

Be careful! Many herbicides can cause damage to waterways and wetlands. Check the herbicide label directions carefully before use near waterways and wetlands. For more information see Guidelines for Safe and Effective Herbicide Use Near Waterways.

Herbicide br​ands and concentrations

Herbicides are referred to by the active chemical ingredient in the following table. The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product does not imply endorsement by DPIPWE over any other equivalent product from another manufacturer. Information on available brands containing the herbicide you require should be obtained from a reputable herbicide supplier or the APVMA website at www.apvma.gov.au.

There may be a number of products with the same active ingredient but with alternate formulations (concentration) registered for control of a weed eg: Glyphosate 360 g/L, Glyphosate 450 g/L may be registered for use on the same weed. Alternate formulations such as these will have a different application rate. Always check the label.

Spot spray ​​application

Stage of Growth
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Prior to seed panicle formationGlyphosateRound-Up Biactive®, Weedmaster Duo® (360 g/L)7 - 13 ml/LnilSuitable for use near waterways.

Non-selective and will damage or kill trees and grasses that come into contact with spray. 

(360 g/L)

Non-selective and will damage or kill trees and grasses that come into contact with spray.

Taskforce®, Tussock TM  Herbicide
(745g / Kg)     

2 ml / L 
​14 days
​In accordance with APVMA Permit PER9792

Preferably from late autumn to early winter.

Very slow acting; results may not be evident for several months after application.

Adequate ground moisture is required to transport chemical into root zone for uptake .

Will kill annual grasses and some native grasses.
*These products are not registered for this application method in Tasmania and will not be mentioned on product labels, however Permit Number – PER9792 issued by the Australian Pesticides & Veterinary Medicines Authority has been issued for this specific use. Note this permit is held by Industry and Investment NSW but is applicable to other states including Tasmania.  If using this method and herbicide you will require a copy of this off-label permit. 

Important Disclaimer 
​​To the extent permitted by law, the Tasmanian Department of Primary Industries, Parks, Water and Environment (including its employees and consultants) excludes all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using information or material (in part or in whole) contained on this website.