Herbicides for Ragwort 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.

Boom Spray Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Seedlings and small rosettes up to 50mmMCPA sodium saltMCPA 2504 L/ha7 daysApply to mature grass pastures.

Consult your agronomist for tolerance levels for legumes should any be present.
Seedlings and small rosettes up to 50mmMCPA amineMCPA500 L
(500 g/L)
500 mL - 1.0 L/haBoom spray where weeds only are present.

Use lower rate for seedlings, higher rate for rosettes to 50mm diameter. Spot spray in pasture situation.

The use of MCPA is preferred to 2,4-D ester in situations where legumes are undersown in the crop.
RosetteDicambaKamba® 500
(500 g/L)
4.0 L/ha7 daysSpray before the 3-5 true leaf stage.

Do not apply to pastures with clover, Lucerne or medics.
MCPA + DicambaKamba® M
(340 g/L MCPA+ 80 g/L Dicamba)
2.8 - 4.0 L/ha7 daysUse higher rate on larger weeds
Rosette to cabbage stage2, 4-D ester LV Estercide® 600
(600 g/L)
3.7 L/ha7 days



The use of MCPA is preferred to 2,4-D ester in situations where legumes are undersown in the crop.

THIS PRODUCT MAY ONLY BE USED FROM 15 APRIL TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR- DPIPWE.
Metsulfuron methylBrush-Off®
(600 g/kg)
15 g/haApply when actively growing.
Will damage legumes in pastures.

Soil-residual, hindering the re-establishment of legumes and pastures for up to 6 months.

Always use a surfactant/wetting agent. See label for compatible products.
Rosette to shooting plantClopyralid*Lontrel™

(300 g/L)

1-2 Litres/ha7 daysApply in 200-250 L of water/ha.
Spray foliage when growth is active.

Consult APVMA Off-Label permit - PER11960 to determine rate appropriate to growth stage.


* These products are not registered for this use on Ragwort in Tasmania and will not be mentioned on product labels, however Permit Number - PER11960 issued by the Australian Pesticides & Veterinary Medicines Authority has been issued for this specific use. If using this method and herbicide you will require a copy of this off-label permit.

For further information on permit details visit the APVMA website at www.apvma.gov.au

Granular Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Rosettes - single and multi-crown plantsPicloram**Tordon™ Granules
(20 g/kg)
2 gNilApply to crushed centre of plant.

**
Note that Picloram remains active in the soil for extended periods and may leach into groundwater.


Spot Spray Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Rosette to shooting plants







2,4-D esterLV Estercide® 600
(600 g/L)
37 ml/10L water7 daysThe use of MCPA is preferred to 2,4-D ester in situations where legumes are undersown in the crop.

Some regrowth may be expected from large multi-crown plants and from shooting and flowering plants.

Always use a surfactant/wetting agent. See label for compatible products.

THIS PRODUCT MAY ONLY BE USED FROM 15 APRIL TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR- DPIPWE.
RosetteDicambaKamba® 500
(500 g/L)
280mL/100 spot application

60 mL / 15 Ltr knapsack
7 daysSpray before the 3-5 true leaf stage.

Do not apply to pastures with clover, Lucerne or medics.
Rosette to cabbage stageMetsulfuron methylBrush-Off®
600 g/kg)
5 g/100L spot application


0.5 g/10L water
See label for plant back timesWill damage legumes in pastures.

Soil-residual, hindering the re-establishment of legumes and pastures for up to 6 months.

Always use a surfactant/wetting agent. See label for compatible products.
Rosette to flowering plantsClopyralid* Lontrel™

(300 g/L)

2-4 mL/L7 daysConsult APVMA Off-Label permit - PER11960 to determine rate appropriate to growth stage.

Some regrowth may be expected from large multi-crown plants and from shooting and flowering plants.

APVMA Off-Label permit - PER11960.

Flowering plantsClopyralid +Diquat*Lontrel™

(300 g/L)

plus

Diquat 200®

(200 g/L)

6 mL/L

plus

2-4 mL/L

7 daysConsult APVMA Off-Label permit - PER11960 to determine rate appropriate to growth stage.

Apply to flowering plants before flower heads begin to brown off.

Some regrowth may be expected from large multi-crown plants and from shooting and flowering plants.

Addition of a surfactant is essential.

Clean water is essential when using diquat.


* These products are not registered for this use on Ragwort in Tasmania and will not be mentioned on product labels, however Permit Number - PER11960 issued by the Australian Pesticides & Veterinary Medicines Authority has been issued for this specific use. If using this method and herbicide you will require a copy of this off-label permit.


For further information on permit details visit the APVMA website at www.apvma.gov.au

Wiper application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Shooting - early flowering plantsClopyralid* Lontrel™
(300g/L)
1L to 2L of water7 daysPlants need to be actively growing.

A differential is required between ragwort and clover.

APVMA Off-Label permit - PER11960.

* These products are not registered for this use on Ragwort in Tasmania and will not be mentioned on product labels, however Permit Number - PER11960 issued by the Australian Pesticides & Veterinary Medicines Authority has been issued for this specific use. If using this method and herbicide you will require a copy of this off-label permit.

For further information on permit details visit the APVMA website at www.apvma.gov.au



    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.




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