St Barnaby’s thistle is a summer growing annual. It can outcompete crops and pastures.
It will outcompete crops and pastures and dense patches can restrict stock movement.
It is well established through many parts of NSW.
St Barnaby’s thistle is an annual or short-lived plant, to 75 cm high. Flower heads are bright yellow surrounded by rows of yellow spines.
Parsons W.T. and Cuthbertson E.G. (1992) Noxious weeds of Australia. (Inkata Press, Melbourne).
See Using herbicides for more information.
2,4-D LV ester 680g/L
(Estercide® Xtra)
Rate: 1.15 - 1.7 L per Hectare
Comments: Boom spray application
Withholding period: Do not graze or cut for stock food for 7 days after application.
Herbicide group: 4 (previously group I), Disruptors of plant cell growth (Auxin mimics)
Resistance risk: Moderate
Fluroxypyr 140 g/L + Aminopyralid 10 g/L
(Hot Shot™ )
Rate: 500 mL in 100 L of water
Comments: Hand gun application
Withholding period: Not required for pastures when used as directed. Do not graze or cut crops for stock food for 7 days after application. See label for export restrictions.
Herbicide group: 4 (previously group I), Disruptors of plant cell growth (Auxin mimics)
Resistance risk: Moderate
Glufosinate-ammonium 200 g/L
(Basta® )
Rate: 1.5–5.0 L/ha
Comments: Boom spray. Actively growing rosettes.
Withholding period: Variable, up to 16 weeks, see label for more information.
Herbicide group: 10 (previously group N), Inhibition of glutamine synthetase
Resistance risk: Moderate
Glufosinate-ammonium 200 g/L
(Basta® )
Rate: 500 mL in 100 L of water
Comments: Hand gun application
Withholding period: Variable, up to 16 weeks, see label for more information.
Herbicide group: 10 (previously group N), Inhibition of glutamine synthetase
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 2018