Parkinsonia control

Page last updated: Wednesday, 5 February 2020 - 8:59am

Please note: This content may be out of date and is currently under review.

Control methods for Parkinsonia (Parkinsonia aculeata) a declared pest in Western Australia.

REPORT THE PRESENCE OF THIS PEST BEFORE UNDERTAKING CONTROL

Information about this pest can be found on the Parkinsonia: declared pest page.

Chemical requirements

When using any agricultural chemicals please ensure that you always follow instructions on the label and any permit. Users of agricultural chemical products must always strictly comply with the directions on the label and the conditions of any permit. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website.

Chemical control options

Chemical control options can be found below. For other methods of control please refer to the aquatic weed control page, the declared plant control handbook.

Recommended herbicides	When actively growing Triclopyr Triclopyr + picloram Access™ Velpar® L Graslan Moist soil if possible, subsurface treatment if dry Velpar® L

Recommended herbicides

When actively growing

Triclopyr
Triclopyr + picloram
Access™
Velpar® L
Graslan

Moist soil if possible, subsurface treatment if dry

Velpar® L

Hebicide: Triclopyr (Group I) (various trade names: see APVMA link)
Active ingredient	600g/L triclopyr
Rates of dilution for spot spraying	1:60 in distillate
Amount of product/10L distillate	160mL in distillate
Rate of product/ha	Not recommended
Time of application	When actively growing
Remarks	Apply as basal-bark spray to mature trees May need follow-up treatment Mix only what can be used on day of spraying – agitate regularly
More information and other control methods	Grub individual plants Trees greater than 5m in height should be treated by stem injection A 755g/L formulation also available

Hebicide: Triclopyr + picloram (Group I) (various trade names: see APVMA link)
Active ingredient	300g/L triclopyr + 100g/L picloram
Amount of product/10L water	35mL
Rate of product/ha	Not recommended
Time of application	When actively growing
Time of application	To trees under 2m in height
Remarks	Add Uptake™ spraying oil @ 50mL/10L of water mix Thoroughly wet foliage
More information and other control methods	Grub individual plants Trees greater than 2m in height should be treated by stem injection Poor control if trees under moisture stress

Hebicide: Access™ (Group I)
Active ingredient	240g/L triclopyr + 120g/L picloram
Rates of dilution for spot spraying	1:60 in distillate
Amount of product/10L distillate	160mL
Time of application	Plants up to stem diameter of 5cm
Remarks	Use low pressure spray (<200kPa) and liberally spray bark until run-off Treat to height of 30cm above ground
More information and other control methods	Do not treat stems that are wet or have been burnt

Hebicide: Velpar® L (Group C)
Active ingredient	250g/L hexazinone
Rates of dilution for spot spraying	Apply neat with a 'spot gun' to soil at 4mL/spot One spot for each metre of tree (bush) height up to 5m tall
Rate of product/ha	Not recommended
Time of application	Apply to moist soil if possible Use sub-surface treatment if dry
Remarks	Needs rain to activate Keep clear of desirable trees Apply spots between stem and drip line Clean 'spot gun' thoroughly after use

Hebicide: Velpar® L (Group C)
Active ingredient	250g/L hexazinone
Amount of product/10L water	35mL
Wetting agent dilution	1:400 BS-1000
Time of application	Trees under 2m tall
Remarks	Avoid spraying under dry conditions or when trees bearing pods Apply to foliage

Hebicide: Graslan (Group C)
Active ingredient	200g/kg tebuthiuron
Rate of product/ha	10–15kg
Time of application	When actively growing
Remarks	Apply to moist soil at beginning of 'wet' season. Plants need to be actively growing. May need follow-up treatment in the next season. For spot treatment apply at 1–1.5g/m². To help with even distribution mix chemical with dry sand and spread over area.
More information and other control methods	Do not apply granules within 100m of water courses Do not apply to ground sloping more than 11 degrees Follow directions on label regarding distribution of granules under the drip line of trees

Biological control options

Biological control agents have been released for Parkinsonia, including Parkinsonia loopers (Eueupithecia species).

Topics

Contact information

Pest and Disease Information Service (PaDIS)

+61 (0)8 9368 3080

Email Pest and Disease Information Service (PaDIS)

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