Herbicides for Sweet Briar 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, check with 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 - or included under off-label provisions for use in bushland - 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
Most herbicides require a wetting agent for best results. Carefully consult the product label for specific directions regarding any 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.

Foliar Spray Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Actively growing to mature
Glyphosate
360 g/L (where product has an aquatic registration)
Weedmaster® Duo
360 g/L
Roundup Biactive®
(360 g/L)
Knapsack
225-300mL
in 15L water
or
High volume
1.5 -2.0 L
in 100 L water
Use higher rate on bushes over 1.5 metres tall.
Apply from late flowering to leaf fall.
Spray to wet all foliage.
*Non cropping and bushland
in accordance with APVMA Permit PER84775.
GlyphosateRoundup Power Max®
(540 g/L)
Knapsack
100-140mLs
in 15L water
Hand gun
660-870 mL
in 100L water
Apply as a thorough foliage spray when bushes are in full leaf and actively growing.
 
Do not apply to drought stressed plants.
TriclopyrGarlon™ 600
(600 g/L)
170 mL
in 100 L water
Use on plants Less than 2 m tall.
Apply when bushes have good leaf cover, growth and no leaf fall.
Triclopyr, **PicloramGrass-up™, Conqueror®
(300 g/L, 100 g/L)
350-500 mL
in 100 L water
Nil
Use on plants less than 1.5 m tall.
Triclopyr, **Picloram,
Aminopyralid
Grazon™ Extra
(300 g/L, 100 g/L, 8 g/L)
500 mL
in 100 L water
Use on plants Less than 2 m tall.
Apply when bushes have good leaf cover, growth and no leaf fall.
Triclopyr, **Picloram
&
Metsulfuron methyl
Grass-up™, Conqueror®
(300 g/L, 100 g/L)
Plus
Associate® /
Brush-off®
(600 g/Kg)
350 mL
+
10 g in
100 L water
Nil

Use on plants less than 1.5 m tall.
Metsulfuron-methyl,
Associate® /
Brush-off®
(600 g/Kg)
10 g/100 L
or
0.1 g/L
plus
surfactant/ wetting agent in accordance with product label
High volume handgun application:
Apply when plants are in full leaf.
Do not apply once leaf fall has commenced.
Non cropping and bushland
spot spray or knapsack application in accordance with APVMA Permit PER84775.
Metsulfuron-methyl,

&
Glyphosate

Brush-off®
600 g/Kg
&
Roundup®
(360 g/L)
10 g
&
200 mL
plus surfactant/ wetting agent in accordance with product label
Apply when plants are in full leaf.

Do not apply once leaf fall has commenced.

Metsulfuron-methyl + glyphosateTrounce
Brush-Pack
(835 g/Kg Glyphosate &
10 g/Kg Metsulfuron)
1 x 173 g measure pack / 100 L water
plus
surfactant/ wetting agent in accordance with label as required
1 day
Apply when bushes are in full leaf prior to leaf fall.

Always add a surfactant.

Metsulfuron-methyl + glyphosateBrush-off®
600 g/Kg
&
Weedmaster® Duo
360 g/L
3 g
&
400 mLs in
100 L water
1 day
Apply when bushes are in full leaf prior to leaf fall.

Always add a surfactant.

Metsulfuron-methyl + glyphosateVarious concentrations*See note in comments  column >
Knapsack spot spraying

in accordance with APVMA Permit PER84775

*Application as per existing registrations or if weed not recorded on label, consistent with range of label rates.
Plus surfactant/ wetting agent in accordance with label as required
.

**Note: picloram remains active in soil for extended periods and may leach into groundwater.

Spotgun Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Actively growing to mature*HexazinoneVelpar ®L
250 g/L
Spotgun
4 mL/spot - 1 spot for each metre in height
1 spot for each metre in height.

Applied into moist soil beneath the bush (refer label).

*Note: Hexazinone remains active in the soil for extended periods and may leach within the soil and cause damage to other plants with roots in the vicinity.

Drill Axe, Cut Stump and/or Basal Bark Application

Stage of Growth
Herbicide
(active
ingredient)
Example of commercial product (concentration of active ingredient)
Application rate of commercial product
Withholding
period
Comments
Actively growing to matureGlyphosate
360 g/L (where product has an aquatic registration)
Weedmaster® Duo
360 g/L
Roundup® Biactive™
360 g/L
Drill axe
2 ml undiluted per hole/cut
In accordance with APVMA Permit PER84775
Glyphosate
360 g/L (where product has an aquatic registration)
Weedmaster® Duo
360 g/L
Roundup® Biactive™
360 g/L
Cut stump

1:5 - undiluted.

In accordance with APVMA Permit PER84775
**Picloram 43 g/kg.Vigilant®
Herbicide Gel
Cut stump
Direct application
3 - 5 mm thick
Cut stems 20mm above ground.
Immediately apply gel over cut surface.
Do not use if rain likely within 12 hours
Avoid use over or near desirable plants, or in areas where their roots may extend or where the chemical may be washed or moved to their roots.
MatureTriclopyrGarlon 600 (600 g/L)Basal bark and
Cut stump
1:30 with diesel distillate
Basal bark method:
Plants with stems up to 5 cm basal diameter.
Cut stump method:
Plants up to and in excess of basal bark size. Apply immediately after cut is made.
Triclopyr
240 g/L,
**Picloram 120 g/L.
AccessBasal bark and
Cut stump
1 litre per 60 litres diesel distillate
Basal bark method:
Plants with stems up to 5 cm basal diameter.
Cut stump method:
Plants up to and in excess of basal bark size. Apply immediately after cut is made.
**Note: picloram remains active in soil for extended periods and may leach into groundwater.

* 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.

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.