Herbicides for Saffron Thistle 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.

Foliar Application

Situation
Herbicide
(active ingredient)
Commercial Product (content of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Seedlings*MCPA MCPA (500 g/L)20-50 ml/10L7 daysIn accordance with APVMA Permit PER8949.

Thorough coverage is essential.

The use of MCPA is preferred to 2,4-D (amine and ester) in situations where legumes are undersown in the crop.
Up to rosette stage2, 4-D esterLV Estercide®
(600 g/L)
9 - 28 ml/10L 7 days



Use when thistles have started to shoot and become more resistant to other herbicides.

The use of MCPA is preferred to 2,4-D (amine and ester) in situations where legumes are under sown in the crop.

THIS PRODUCT MAY ONLY BE USED FROM 15 APRIL TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR- DPIPWE.
While actively growingGlyphosateRoundUp® (360 g/L)50 -70 ml/10LnilNon-selective and will damage or kill trees and grasses that come into contact with spray.

Addition of adjuvant required in accordance with label.
Roundup Powermax (540g/L)33-48 ml/10LnilNon-selective and will damage or kill trees and grasses that come into contact with spray.
Rosettes to pre-flowering*Metsulfuron-methylBrush-Off®
(600 g/Kg)
1-1.5 g/10L NilIn accordance with APVMA Permit PER8949.

Will severely damage clovers and other broadleaved plants, including surrounding trees, if contacted by the spray.

Soil-residual, hindering the re-establishment of clovers and other broadleaved plants for 6-12 months.

Addition of adjuvant required in accordance with label.
Up to bud stageTriclopyrTriclopyr (600 g/L)8 ml/10LnilWill not affect grasses, will severely damage clovers and other broadleaved plants, including surrounding trees, if contacted by the spray.
Rosettes to early flowering*ClopyralidLontrel® (300 g/L)25-50 ml/10LUp to 28 daysIn accordance with APVMA Permit PER8949.

Can be used on early flowering plants to reduce formation of viable seed.

Addition of adjuvant required in accordance with label.

Clovers and medics will be eliminated for at least 12 months.
ClopyralidLontrel® (750 g/L)10 g/10L water7 daysCan be used on early flowering plants to reduce seed formation.

Clovers and medics will be eliminated for at least 12 months.

Boom Spray Application

Situation
Herbicide
(active ingredient)
Commercial product
(content of active ingredient)
Application rate per hectare
Withholding period
Comments
Up to rosette stage2, 4-D ester LV Estercide ®
(600 g/L)
900 ml - 2.8 L/ha 7 days



Pastures and non legumes.

The use of MCPA is preferred to 2,4-D (amine and ester) in situations where legumes are under sown in the crop.

THIS PRODUCT MAY ONLY BE USED FROM 15 APRIL TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR- DPIPWE.
Rosettes to pre stem elongationClopyralidLontrel ® (750 g/L)20 or 28 g/ha + 1 - 1.5 L MCPA amine (500 g/L)7 daysSpray during active growth usually early winter to spring.

Use higher rates on multi-crowned plants or large rosettes.

Clovers and medics will be eliminated for at least 12 months.
While actively growingGlyphosateRoundUp® (360 g/L)2 -3 L/hanilNon-selective and will damage or kill trees and grasses that come into contact with spray.

Addition of adjuvant required in accordance with label.


*These products are not registered for this use in Tasmania and will not be mentioned on products labels, however a permit (number-PER8949) issued by the Australian Pesticides & Veterinary Medicines Authority allows this specific use. If using this method and herbicide you will require a copy of this 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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