Perennial ragweed is a herb up to 2 m tall. It is a weed of crops and pastures and can cause skin allergies.
Perennial ragweed, native from Canada to Mexico, is a perennial herb to 1.5 m high. Spread by seed and stolons, which sends up shoots to form large dense colonies.
A weed of crops and pasture, Perennial ragweed, is not eaten by stock. It has an extensive root system making it difficult to control. Major cause of allergy with pollen causing flu-like symptoms; contact with the plant can also cause skin allergies.
See Using herbicides for more information.
Dicamba 750 g/L
(Kamba® 750)
Rate: 400 mL per 100 L of water. Add a surfactant.
Comments: Spray prior to flowering. For non crop situations.
Withholding period: Do not harvest, graze or cut for stock food for 7 days after application.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
Dicamba 750 g/L
(Kamba® 750)
Rate: 5.9 L/ha Use a minimum of 1500 L water per ha. Add a surfactant.
Comments: Boom spray for non-crop situations. Spray prior to flowering.
Withholding period: Do not harvest, graze or cut for stock food for 7 days after application.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
Dicamba 750 g/L
(Kamba® 750)
Rate: 87 mL per 15 L of water. Add a surfactant.
Comments: Spot spray prior to flowering. For non-crop situations.
Withholding period: Do not harvest, graze or cut for stock food for 7 days after application.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
The content provided here is for information purposes only and is taken from the Biosecurity Act 2015 and its subordinate legislation, and the Regional Strategic Weed Management Plans (published by each Local Land Services region in NSW). It describes the state and regional priorities for weeds in New South Wales, Australia.
Area | Duty |
---|---|
All of NSW | General Biosecurity Duty All pest plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. Any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable. |
Reviewed 2021