| REPORT THE PRESENCE OF THIS PEST BEFORE UNDERTAKING CONTROL |
Information about this pest can be found on the leafy elodea: 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.
Control control options
There are no chemicals registered for this weed but these chemicals have activity on other aquatic weeds. Chemical control options can be found below. For other methods of control please refer to the aquatic weed control page.
Recommended herbicides |
|
|---|
| Herbicide: Diquat (Group L) (various trade names: see APVMA link) | |
| Active ingredient | 200g/L diquat |
| Rates of dilution for spot spraying | A concentration of 0.5-1ppm must be maintained throughout the entire water body 1ppm = 1mL diquat/m3 |
| Amount of product/10L water | 50mL |
| Rate of product/ha | 5–10L product/ha/m depth |
| Wetting agent dilution | Not recommended |
| Time of application | Summer - when plant is actively growing |
| Remarks |
|
| More information and other control methods | Small infestations may be removed mechanically. Flowing water can be treated with Acrolein (permit and licence required).
|
| Herbicide: Coptrol | |
| Active ingredient | 107g/L present as mixed copper chelates |
| Rates of dilution for spot spraying | Adjust rates for other formulations |
| Rate of product/ha | 2–5L spray to obtain correct dilution (see label for table to calculate dilution required for various depths of water) |
| Wetting agent dilution | Water temperature should be at least 15ºC |
| Time of application | Re-treat after 14 days if required. Full effects may take up to five days. |
| Remarks |
|