Herbicides for African Boxthorn Control

Disclaimer

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.

Only herbicides registered for use in pasture and non-cropping situations are listed in the following table. Care must be taken in using herbicides as non-target plants contacted may be harmed. 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 the herbicide use guidelines document below

Guidelines for Safe and Effective Herbicide Use Near Waterways (706Kb)

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.

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 100 mL - 150 mL in 15L or high volume 700 mL -1000 mL / 100 L of water		Non agricultural areas (refer label). Use lower rate on young bushes. Spray to wet all foliage. Do not spray during hot, dry conditions.
	Glyphosate * 360 g/L (where product has an aquatic registration)	Weedmaster Duo 360 g/L Roundup Biactive® 360 g/L	10-13 ml/L		Non cropping and bushland in accordance with APVMA Permit PER84775 Spot spraying: Use adjuvants in accordance with label as required. Use lower rate on young bushes. Spray to wet all foliage. Do not spray during hot, dry conditions.
	Glyphosate	Roundup Power Max® 540 g/L	470 - 660 mL/L of Water		Non agricultural areas (around buildings, commercial and industrial areas, domestic and public service areas, right-of-ways). Apply as a thorough foliage spray when bushes are in full leaf and actively growing. Do not apply to drought stressed plants.
	Triclopyr, Picloram**	Conqueror (300 g/L, 100 g/L)	Foliar spray 500 mL/ 100 L of water		Agricultural non-crop areas, commercial and industrial areas, fence lines, forestry, pastures and rights-of-way. Use on plants less than 2 m tall. Apply when bushes have good leaf cover, growth and no leaf fall.
	Triclopyr, Picloram**, Aminopyralid	Grazon Extra (300 g/L, 100 g/L, 8 g/L.)	Foliar spray 500 mL/ 100L of water		Agricultural non-crop areas, commercial and industrial areas, fence lines, forestry, pastures and rights-of-way. Use on plants Less than 2 m tall. Apply when bushes have good leaf cover, growth and no leaf fall.
	Triclopyr	Garlon 600® (600 g/L)	170 mL/ in 100L of water		Agricultural non-crop areas, commercial and industrial areas, fence lines, forestry, pastures and rights-of-way. Use on plants Less than 2 m tall. Apply when bushes have good leaf cover, growth and no leaf fall.
	Metsulfuron-methyl,	Associate, Brush-off 600 g/Kg	As per existing Registrations or if weed not recorded on label: 10-15g/100L		Non cropping and bushland In accordance with APVMA Permit PER84775 Spot spraying, knapsack.
	Metsulfuron-methyl + glyphosate	Various concentrations	As per existing registrations or if weed not recorded on label: consistent with range of label rates		Non cropping and bushland in accordance with APVMA Permit PER84775 Spot spraying, knapsack.

**Note: Picloram remains active in the 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
	HEXAZINONE	Velpar L 250 g/L	Spotgun 4 mL/spot - 1 spot for each metre in height		Around agricultural buildings and in pasture situations. 1 spot for each metre in height. Applied into moist soil beneath the bush (refer label).

*Note: that 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 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 mature	Glyphosate 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		Non cropping and bushland In accordance with APVMA Permit PER84775
Actively growing to mature	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.		Non cropping and bushland In accordance with APVMA Permit PER84775 Trees and shrubs generally undiluted for blackberry, bulbs and hard to kill weeds.
Mature	Triclopyr	Garlon 600® (600 g/L)	Basal bark and Cut stump 1:30 with diesel distillate		Agricultural non-crop areas, commercial and industrial areas, forests, pastures and rights-of-way. 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.
Mature	Triclopyr 240 g/L, Picloram ** 120 g/L.	Access	Basal bark and Cut stump 1 litre per 60 litres diesel distillate		Agricultural non-crop areas, commercial and industrial areas, forests, pastures and rights-of-way. 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 the 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.

Important disclaimer

To the extent permitted by law, the Department of Natural Resources and Environment Tasmania (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.