Herbicides for Spiny Emex Control

Spiny emex plant with fruits, image: Rod Randall, The Plant Protection Society of Western AustraliaThese 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 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 some 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.

Agricultural non-crop, commercial and industrial areas

Stage of Growth
Herbicide
(active
ingredient & concentration)
Example of commercial product
Application rate of commercial product
Withholding
period
Comments
Apply to bare soil Bromacil
(800 g/kg)
Uragan® WGPer ha 3.5 -6.5 kg/haNot for use in grazed areas.Application rates are rainfall and soil type dependant. Refer label for application rate and timing.
Rosette /young plants2,4-DB (400 g/L)ButicideHigh vol. spray
250-500 ml/100 L water
7 daysSpot spray only


THIS PRODUCT MAY ONLY BE USED FROM 15 MAY TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR -DPIPWE.
Actively growingGlufosinate- Ammonium
(200 L/kg)
Finale®, Basta®Per ha 2 to 5 L/haDO NOT GRAZE OR CUT FOR STOCK FOOD FOR 8 WEEKS AFTER APPLICATION.Use lower rate where weed density is sparse or weeds are young. Refer label.

Thorough coverage is essential.
High vol. spray
500 ml/100 L water
knapsack
75 ml/15 L
Young mature plantsGlyphosate
(360 g/L)
Panzer 360, ROUNDUP®Per ha 2 to 3 L/ha7 daysNote: Glyphosate is a non-selective herbicide. Avoid contact with non-target plants.
High vol. spray
500 -700 ml/100 L water
knapsack
75 - 100 ml/15 L
Imazapyr (150 g/L)
Plus glyphosate (150 g/L)
ARSENAL® Xpress7 L/haDO NOT GRAZE
7 WEEKS
Medium volume: apply in 50-200 L water/ha
High volume: refer to label.

Pasture

Stage of Growth
Herbicide
(active
ingredient and concentration)
Example of commercial product
Application rate of commercial product
Withholding
period
Comments
SeedlingsDicamba
(500 g/L)
Kamba® 500
Dicamba 500SL
Per ha
280-560 ml/ha
7 daysNon-legume pasture
When applying by boom spray use 110 to 280 litres of mixture per hectare.
High vol. spray
40 ml/100 L water
knapsack
10 ml/15 L
Young mature plantsPer ha
560 ml-1.1 L/ha
High vol. spray
76 ml/100 L water
knapsack
18 ml/15 L
Rosette /young plants2,4-DB (400 g/L)ButicidePer ha
3.5 L/ha in 110-220 L of water
7 daysIn sown pasture containing clover or medics
Clovers and medics in 1-5 trifoliate leaf stage
Grass seedlings should have 3 or more leaves

THIS PRODUCT MAY ONLY BE USED FROM 15 MAY TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR -DPIPWE.
Spot spray
250-500 ml/100 L water
Young plants only2,4-D ester
(450 g/L)
Ken-Star 450Per ha
733 ml/ha in 110-220 L of water
7 daysSPRAY/GRAZE TECHNIQUE
Refer label for instructions.

THIS PRODUCT MAY ONLY BE USED FROM 15 MAY TO 15 SEPTEMBER UNLESS PERMITTED BY THE CHEMICAL REGISTRAR -DPIPWE.
2,4-D amine
(625 g/L)
Genfarm 2,4-D Amine 625Per ha
560 ml/ha
7 days
Actively growing to matureGlyphosate
(360 g/L)
Panzer 360, ROUNDUP®High vol. spray
500-700 ml/100 L water
7 daysSPOT SPRAY ONLY
Note: Glyphosate is a non-selective herbicide.
Avoid contact with non-target plants.
knapsack
75- 100 ml/15 L

Turf and lawn

Stage of Growth
Herbicide
(active
ingredient & concentration)
Example of commercial product
Application rate of commercial product
Withholding
period
Comments
Actively growing plantsMCPA (280 g/L) +
BROMOXYNIL (140 g/L) +
DICMABA (40 g/L)
Imtrade Trichem herbicidePer ha
4 to 5 L in 150 L water/ha
DO NOT feed turf/lawn clippings from treated areas to poultry or livestock.Apply to actively growing weeds.
Use the lower rate for weeds up to 4-leaf stage.

Non-cropping and bushland

Stage of Growth
Herbicide
(active
ingredient & concentration)
Example of commercial product
Application rate of commercial product
Withholding
period
Comments
Actively growing to matureGlyphosate*
(360 g/L) where product has an aquatic registration
Weedmaster® Duo
Roundup Biactive®
10-13 ml per
L water
In accordance with APVMA Permit PER8949
Spot spraying / knapsack
Add surfactant/ wetting agent in accordance with product label
Metsulfuron-methyl*
(600 g/Kg)
Associate® / Ken-Met 600/ Brush-off®5 -10 g in 100 L water
plus
surfactant
In accordance with APVMA Permit PER8949
Spot spraying / knapsack
Add surfactant/ wetting agent in accordance with product label
* These products are not registered for this application method in Tasmania and will not be mentioned on product labels, however Permit Number - PER8949 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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