Herbicides for Cumbungi (Bullrush) 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 non-cropping situations are listed in the following table. For recommendations in specific crops consult an agronomist.

Wetting Agents

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

Waterways and 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 Brands 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 360g/L, Glyphosate 450g/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.

Waterways

Type of application
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Comments
Foliar SprayGlyphosateRoundup Biactive®
(360 g/L)
13 ml/LDo not add extra Surfactant/ Wetter unless it is approved for use in aquatic situations.

Apply to actively growing plants at the early head to full head stage. Summer to Autumn.

Re-treatment may be required to restrict seedling re-establishment.

Complete coverage of all foliage is essential (avoid spraying to run-off stage).

Avoid run-off or spray drift entering water.

Plants with more than one-third of stems below water may not be killed.

Where practicable, lower water level to give the maximum plant exposure, and kept down for at least 12 hours after application.

Away from Waterways

Type of application
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Comments
Foliar SprayGlyphosate(360 g/L)





Sickle™ 540
(540 g/L)

13 ml/1LApply to actively growing plants at the early head to full head stage. Summer to Autumn.

Follow up applications after 4 to 6 weeks may be necessary

Complete coverage of all foliage is essential (avoid spraying to run-off stage)
2,2-DPAPropon Systematic Grasskiller
(740 g/kg)
2k g/100LFor use in irrigation channels, drains and bore drains.

Ensure channels and drains are dry prior to spraying or at most have no more than 5-8cm of water.

Re-treatment may be required to restrict seedling re-establishment.
Amitrole + Ammonium thiocyanateAmitrole T
(Amitrole 250 g/L + ammonium thiocyante
220 g/L)
2.3 L/100LApply during flowering period between January and May.

Re-treatment may be required to restrict seedling re-establishment.


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.