Arum lily control

Page last updated: Monday, 16 January 2017 - 3:22pm

Please note: This content may be out of date and is currently under review.

Control methods for arum lily (Zantedeschia aethiopica) a declared pest in Western Australia.

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

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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

Control options

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

Chemical control options

Recommended herbicides

June-October

  • Chlorsulfuron; Metsulfuron; 2,4-D amine; Paraquat

Herbicide: Chlorsulfuron (Group B) (various trade names: see APVMA link)

Active ingredient

750g/kg chlorsulfuron

Rate of dilution for spot spraying

1g to 50L

Rate of product/10L water

0.2g

Rate of product/ha 20g

Wetting gent dilution

1:400

Time of application

June–October (best results when flowering)

Remarks

  • agitate well to ensure good mixing when using small quantities of chlorsulfuron — dissolve before adding to the tank: the spot spraying dilution is based on 20g/ha
  • to avoid the need to measure very small quantities of chemical add 1g chlorsulfuron to 1L of water: use 200mL of this mix to 10L of water in a knapsack sprayer
  • glyphosate can be used at 1:100 but results are only fair.

Herbicide: Metsulfuron (Group B) (various trade names: see APVMA link)

Active ingredient

600g/kg metsulfuron

Rate of dilution for spot spraying

0.75g to 50L

Rate of product/10L water

0.2g

Rate of product/ha

20g

Wetting agent dilution

1:400

Time of application

June-October (best results when flowering)

Remarks

  • agitate well to ensure good mixing when using small quantities of metsulfuron — dissolve before adding to the tank: the spot spraying dilution is based on 20g/ha
  • for metsulfuron add 1g to 1L of water and take 150mL. Add a wetting agent @ 10mL/10L of water: use 200mL of this mix to 10L of water in a knapsack sprayer
  • Glyphosate can be used at 1:100 but results are only fair.

Herbacide: Paraquat (Group L) (various trade names: see APVMA link)

Active ingredient

250g/L paraquat

Rate of product/10L water

20mL

Rate of product/ha

2L

Wetting agent dilution

1:400 or 1:1000 of BS-1000

Remarks

  • not recommended for application unless by registered spray contractor
  • this is a very effective treatment as it appears to reduce the underground rhizomes or tubers
  • application through blanket wiper is also very effective for all the above chemicals.

Herbicide: 2,4-D amine (Group I) (various trade names: APVMA link)

Active ingredient

  1. 500g/L 2,4-D amine
  2. 625g/L

Rate of dilution for spot spraying

  1. 1:200
  2. 1:250

Rate of product/10L water

  1. 50mL
  2. 40mL

Rate of product/ha

  1. 5L
  2. 4L

Wetting agent dilution

1:1000

Remarks

  • Busselton region recommended 1:80 2,4-D amine
    • chemical is covered by the Restricted Spraying Regulations and can not be applied within 5km of a commercial vineyard or tomato garden without a permit
  • permits can be obtained from Department of Agriculture and Food Western Australia
    • in these situations paraquat, chlorsulfuron and metsulfuron are the preferred treatment

Contact information

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080