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 50mm	MCPA sodium salt	MCPA 250	4 L/ha	7 days	Apply to mature grass pastures. Consult your agronomist for tolerance levels for legumes should any be present.
Seedlings and small rosettes up to 50mm	MCPA amine	MCPA500 L (500 g/L)	500 mL - 1.0 L/ha		Boom 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.
Rosette	Dicamba	Kamba® 500 (500 g/L)	4.0 L/ha	7 days	Spray before the 3-5 true leaf stage. Do not apply to pastures with clover, lucerne or medics.
Rosette	MCPA + Dicamba	Kamba® M (340 g/L MCPA+ 80 g/L Dicamba)	2.8 - 4.0 L/ha	7 days	Use higher rate on larger weeds
Rosette to cabbage stage	2, 4-D ester	LV Estercide® 600 (600 g/L)	3.7 L/ha	7 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 Registrar of Chemical Products, DPIPWE.
Rosette to cabbage stage	Metsulfuron methyl	Brush-Off® (600 g/kg)	15 g/ha		Apply 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.

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 plants	Picloram**	Tordon™ Granules (20 g/kg)	2 g	Nil	Apply to crushed centre of plant.

** Note: 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 ester	LV Estercide® 600 (600 g/L)	37 ml/10L water	7 days	The 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 Registrar of Chemical Products, DPIPWE.
Rosette	Dicamba	Kamba® 500 (500 g/L)	280ml/100 spot application 60 ml / 15 Ltr knapsack	7 days	Spray before the 3-5 true leaf stage. Do not apply to pastures with clover, lucerne or medics.
Rosette to cabbage stage	Metsulfuron methyl	Brush-Off® 600 g/kg)	5 g/100L spot application 0.5 g/10L water	See label for plant back times	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.

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.