Herbicides for Spiny Emex 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 / 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® WG	Per ha 3.5-6.5 kg/ha	Not for use in grazed areas.	Application rates are rainfall and soil type dependant. Refer label for application rate and timing.
Rosette /young plants	2,4-DB (400 g/L)	Buticide	High vol. spray 250-500 ml/100 L water	7 days	Spot spray only. This product may only be used from 15 May to 15 September unless permitted by the Registrar of Chemical Products, DPIPWE.
Actively growing	Glufosinate- Ammonium (200 L/kg)	Finale®, Basta®	Per ha 2 to 5 L/ha High vol. spray 500 ml/100 L water knapsack 75 ml/15 L	Do 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.
Young mature plants	Glyphosate (360 g/L)	Panzer 360, Roundup®	Per ha 2 to 3 L/ha High vol. spray 500 -700 ml/100 L water knapsack 75 - 100 ml/15 L	7 days	Note: Glyphosate is a non-selective herbicide. Avoid contact with non-target plants.
	Imazapyr (150 g/L) Plus glyphosate (150 g/L)	Arsenal® Xpress	7 L/ha	Do 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
Seedlings	Dicamba (500 g/L)	Kamba® 500 Dicamba 500SL	Per ha 280-560 ml/ha High vol. spray 40 ml/100 L water knapsack 10 ml/15 L	7 days	Non-legume pasture. When applying by boom spray use 110 to 280 litres of mixture per hectare.
Young mature plants	Dicamba (500 g/L)	Kamba® 500 Dicamba 500SL	Per ha 560 ml-1.1 L/ha High vol. spray 76 ml/100 L water knapsack 18 ml/15 L	7 days	Non-legume pasture.
Rosette/ young plants	2,4-DB (400 g/L)	Buticide	Per ha 3.5 L/ha in 110-220 L of water Spot spray 250-500 ml/100 L water	7 days	In 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 Registrar of Chemical Products, DPIPWE.
Young plants only	2,4-D ester (450 g/L)	Ken-Star 450	Per ha 733 ml/ha in 110-220 L of water	7 days	Spray/graze technique: Refer label for instructions. This product may only be used from 15 May to 15 September unless permitted by the Registrar of Chemical Products, DPIPWE.
	2,4-D amine (625 g/L)	Genfarm 2,4-D Amine 625	Per ha 560 ml/ha	7 days
Actively growing to mature	Glyphosate (360 g/L)	Panzer 360, Roundup®	High vol. spray 500-700 ml/100 L water knapsack 75- 100 ml/15 L	7 days	Spot spray only. Note: Glyphosate is a non-selective herbicide. Avoid contact with non-target plants.

Turf and lawn

Stage of Growth	Herbicide (active ingredient & concentration)	Example of commercial product	Application rate of commercial product	Withholding period	Comments
Actively growing plants	MCPA (280 g/L) + Bromoxynil (140 g/L) + Dicamba (40 g/L)	Imtrade Trichem herbicide	Per 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 mature	Glyphosate* (360 g/L) where product has an aquatic registration	Weedmaster® Duo Roundup Biactive®	10-13 ml per L water		In accordance with APVMA Permit PER84775. 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 PER84775. 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 - PER84775 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.