Information about this pest can be found on the parrot's feather: 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, and the declared plant control handbook.
| Recommended herbicides |
|
| Herbicide: Roundup® Biactive, Razor® (Group M) | |
| Active ingredient | 360g/L glyphosate present as the isopropylamine salt |
| Rate of product/10L water | 100mL |
| Time of application | Actively growing plants |
| Wetting agent | Do not add wetting agent |
| Remarks | Effectiveness decreases when more than 25% of the plant is below the water surface. Do not submerge the plants after spraying as this will wash the chemical off the plants. Avoid over spray into clear water. |
| More information | Use only the approved products over water surfaces. Arsenal Express® approved for aquatic use in New South Wales. |
| Herbicide: Reglone® (Group L) | |
| Active ingredient | 200g/L diquat |
| Rate of product/10L water | 40mL |
| Time of application | Actively growing plants |
| Wetting agent | 20mL of Agral®/10L water |
| Remarks | Apply as an overall spray wetting foliage thoroughly; use clean water for best results |
| More information | Use only the approved products over water surfaces |