One-leaf cape tulip control

Page last updated: Monday, 16 January 2017 - 3:58pm

Please note: This content may be out of date and is currently under review.

Control methods for one-leaf cape tulip (Moraea flaccida, previously Homeria flaccida).

Information about this pest can be found on the one-leaf cape tulip: 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 declared plant control handbook.

Chemical control options

Recommended herbicides

(One-leaf) August-September, (two-leaf) July-end August:

2,4-D LV ester (cereals and pasture)

2,4-D amine (cereals and pasture)

2,4-DB (cereals and pasture)

Paraquat (blanket wiper)

Full emergence to early August:

2,2-DPA

Wheat pre-sowing or post-emergence. Barley and oats post-emergence only:

Chlorsulfuron

Wheat: 10 days pre-sowing. Barley post-emergence:

Metsulfuron

At point of corm exhaustion (pasture):

Spinnaker® (for two-leaf only)

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

Active ingredient

600 or 680g/L 2,4-D ester

Rate of dilution for spot spraying

1:1500–1:1000

Rate of product/10L water

7–10mL

Rate of product/ha

600g/L formulation

  • Cereal crops (not oats) 1.3L
  • Pastures 1.8–3.7L (will damage legumes)

680g/L formulation

  • Cereal crops(not oats) 1.15L
  • Pastures 1.7–2.47L (will damage legumes)

Wetting agent dilution

1:600

Remarks

August-September (one-leaf)
July-end August (two-leaf)

 

  • Burn paddock in late summer early autumn to increase sprouting of corms cormils. Respraying at lower rates will be necessary for several years to exhaust dormant corms and cormils. Treatment will damage sub-clover.
  • Not favoured if near crops sensitive to 2,4-D e.g. peas, canola, vines and lupins.

More information and other control methods

  • Cultivate after a good emergence. Repeat a few weeks later.
  • Repeat treatment for several years to exhaust dormant corms. Grub individual plants and burn but chemical control is preferable.
  • Glyphosate or paraquat applied through a blanket wiper is effective on one-leaf. Less satisfactory results are achieved on two-leaf.

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

Active ingredient

500g/L 2,4-D amine

Rate of dilution for spot spraying

1:1000–1:670

Rate of product/ha

1–1.5L

Wetting agent

1:600

Remarks

Burn paddock in late summer early autumn to increase sprouting of cormils and corms. Respraying at lower rates will be necessary for several years to exhaust dormant corms and cormils. Treatment will damage clover.

More information and other control methods

  • Cultivate after a good emergence. Repeat a few weeks later.
  • Repeat treatment for several years to exhaust dormant corms.
  • Grub individual plants and burn but chemical control is preferable.

Herbicide: 2,4-DB (Group I) (various trade names: see APVMA link)

Active ingredient

400g/L 2,4–DB

Rate of dilution for spot spraying

1:500–1:300

Rate of product/10L water

20–30mL

Rate of product/ha

2–3L

Wetting agent

1:600

Time of application

August-September (one-leaf)

July-end August (two-leaf)

Remarks

Use where it is important to maintain clover content of pastures

More information and other control methods

  • Cultivate after a good emergence. Repeat a few weeks later.
  • Repeat treatment for several years to exhaust dormant corms.
  • Grub individual plants and burn but chemical control is preferable.

Herbicide: 2,2-DPA (Group J)

Active ingredient

740g/kg 2,2–DPA

Rates of dilution for spot spraying

55g in 10L

Rate of product/10L water

55g

Rate of product/ha

5.5kg

Wetting agent dilution

1:600

Time of application

Full emergence to early August

Remark and other control measures

This treatment is recommended only for early control. More expensive than 2,4-D. Use in non-arable areas only. Useful for areas that become boggy later in winter. Can also be useful in bushland treatments.

 

  • Cultivate after a good emergence. Repeat a few weeks later.
  • Repeat treatment for several years to exhaust dormant corms.
  • Grub individual plants and burn but chemical control is preferable.
  • Applied through a blanket wiper is effective on one-leaf. Less satisfactory results are achieved on two-leaf.

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

Active ingredient

750g/kg chlorsulfuron  

Rates of dilution for spot spraying

2g in 100L

Rate of product/10L water

0.2g

Rate of product/ha

15g

Wetting agent dilution

1:400

Time of application

Wheat pre-sowing or post-emergence. Barley and oats post-emergence only. Control can be achieved from early emergence to flowering of the cape tulip. Less damage occurs to most non-legume components if applied late post-emergence.

Remarks and other control measures

  • Recommended for control of tulip in cereal crops and non legume pastures, particularly if Paterson's curse, soursob or dock are also a problem. Dilution rate for spot spraying is based on 20g/ha.
  • Before using chlorsulfuron or other sulfonyl urea herbicides in cereals consider its implications for herbicide resistance strategies.
  • Chlorsulfuron and metsulfuron have given promising results when used on pasture through a weed/blanket wiper at rates of 1g/L.

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

Active ingredient

600g/kg metsulfuron methyl

Rates of dilution for spot spraying

1g in 100L

Rate of product/10L water

0.1g

Rate of product/ha

5g

 

Wetting agent dilution

 

1:400–1:250

Time of application

Wheat: 10 days pre–sowing

Wheat-barley: post-emergence

More information and other control methods

Chlorsulfuron and metsulfuron have given promising results when used on pasture through a weed wiper at rates of 1g/L

Herbicide: Spinnaker® (Group B)

Active ingredient

700g/kg imazethapyr

Rate of product/ha

35–50g

Wetting agent dilution

BS-1000 1:500 or Pulse® at 200mL/100L or Hasten 500mL/100L

Time of application

At point of corm exhaustion

Remarks and other control methods

  • Use Spinnaker only on two-leaf cape tulip. Very safe on subterranean clover It may suppress some grasses and erodium.
  • Chlorsulfuron and metsulfuron have given promising results when used on pasture through a weed wiper at rates of 1g/L.
  • A mixture of 20-25g Spinnaker with 100-150mL glyphosate in pasture. Re-treatment the following years is essential.

Herbicide: Paraquat (Group L)

Active ingredient

250g/L paraquat

Rate of product/ha

1–1.5L

Wetting agent

100mL BS-1000/100L

Time of application

Late August to September or at appearance of first flowers (for one-leaf cape tulip only)

Remarks and other control methods

  • Recommended for trained or registered spraying contractor.
  • Can also be applied using a blanket wiper at 1L/10L of mix.
  • Can be used as a spray in conjunction with spray - topping to prevent grass seed production in pasture.

Contact information

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