Information about this pest can be found on the alligator weed: 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.
Recommended herbicides |
|
| Herbicide: Casoron® (Group K) | |
| Active ingredient | 67.5g/kg dichlobenil |
| Rate of product | 22g/m² |
| Remarks | Normally applied as a granule treatment, but can be mixed with water and applied as a foliar spray. In this case add a wetting agent such as BS-1000 @ 1mL/L. Do not apply to flowing water. Only apply to alligator weed mats. |
| Herbicide: Metsulfuron methyl (Group B) (various trade names: see APVMA link) | |
| Active ingredient | 600g/kg metsulfuron methyl |
| Rate of product/10L water | 1g |
| Rate of product/ha | 80g |
| Wetting agent | 1:1000 – non-ionic surfactant such as BS-1000 |
| Remarks |
|
| Herbicide: Roundup, Biactive, Razor, Eraze, Weedmaster 360 Herbicide (Group M) | |
| Active ingredient | 360g/L glyphosate as the isopropylamine salt |
| Rate of product/10L water | 100mL |
| Wetting agent | 1:1000 – using a non-ionic surfactant such as |
| Time of application | Summer to winter |
| Herbicide: Nufarm Credit Broadhectare Herbicide (Group M) | |
| Active ingredient | 540g/L glyphosate (present as the isopropylamine salt and mono-ammonium salts) |
| Rate of product/10L water | 66–86mL |
| Wetting agent | Nufarm Bonus adjuvant/surfactant |
| Time of application | Summer to winter |