Coolatai grass
Hyparrhenia hirta
Weed profile
Perennial
Grass
Fire hazard- Habitat: native vegetation, pastures
Impact
Invades pastures and bushland. Fire hazard.
Description
- Perennial grass forming large tussocks.
- Leaves to 35 cm long, 5 mm wide, rough like sandpaper.
- V-shaped pairs of spikelets on branched flowering stems.
Control options
flupropanate (745g/L)
Application Method: Spot spray
Application Rate: 300mL/100L
Product Name: Tussock™
Herbicide Group: 0
Situation: Non-crop areas and pastures.
Timing: Spot spray, July - October
Comments:
Add a non-ionic surfactant. Apply herbicide solution to the point of run-off from leaf surfaces – 1000-2000 L / Ha.
A slow-working residual. Apply early in the season.
Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L)
Application Method: Boom spray
Application Rate: 3L/ha
Product Name: Tussock™
Herbicide Group: 0
Situation: Non-crop areas and pastures.
Timing: Boom spray, July - October
Comments:
Add a non-ionic surfactant. Apply herbicide solution to the point of run-off from leaf surfaces – 1000-2000 L / Ha.
A slow-working residual. Apply early in the season.
Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
glyphosate (450g/L) + metsulfuron-methyl (600g/kg)
Application Method: Spot spray
Application Rate: 800mL + 3g/100L
Product Name: Roundup CT® + Brush-Off®
Herbicide Group: 9, 2
Situation: Non-crop areas and pastures.
Comments:
Non selective, avoid contact with desirable plants.
Soil active herbicide, may damage desirable vegetation.
Legal Status: PER 13371 (exp. 2027)
flupropanate (745g/L) + glyphosate (450g/L)
Application Method: Boom spray
Application Rate: 3L + 300-500mL/ha
Product Name: Tussock™ + Roundup CT®
Herbicide Group: 0, 9
Situation: Non-crop areas and pastures.
Timing: Boom spray, July - October
Comments:
- Add a non-ionic surfactant.
- Use the higher rate for dense infestations.
- Apply to fresh foliage.
- Slashing to promote fresh growth 2-3 weeks before spraying will increase effectiveness.
- Apply glyphosate alone for seed set suppression; or for control mix flupropanate with glyphosate.
- Non selective, avoid contact with desirable plants.
- Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L) + glyphosate (450g/L)
Application Method: Wiper
Application Rate: 500mL + 260mL/10L
Product Name: Tussock™ + Roundup CT®
Herbicide Group: 0, 9
Situation: Non-crop areas and pastures.
Timing: Wiper, July - October
Comments:
- Use the higher rate for dense infestations.
- Apply to fresh foliage.
- Slashing to promote fresh growth 2-3 weeks before spraying will increase effectiveness.
- Non selective, avoid contact with desirable plants.
Legal Status: PER 9792 (exp. 2025)
Manual removal
Situation: Any
Timing: When found.
Comments: Pull out each tussock with a spade and dispose.
glyphosate (450g/L)
Application Method: Wiper
Application Rate: 2.6L/10L water
Product Name: Roundup CT®
Herbicide Group: 9
Situation: Non-crop areas and pastures.
Timing: Wiper, September - May
Comments:
2-3 repeat treatments will be necessary.
Non selective, avoid contact with desirable plants.
Legal Status: PER 9792 (exp. 2025)
glyphosate (450g/L)
Application Method: Boom spray
Application Rate: 4.8L/ha
Product Name: Roundup CT®
Herbicide Group: 9
Situation: Non-crop areas and pastures.
Timing: Boom spray, September - May
Comments:
Apply herbicide solution to the point of run-off from leaf surfaces – 1000-2000 L / Ha.
Non selective, avoid contact with desirable plants.
Legal Status: PER 9792 (exp. 2025)
glyphosate (450g/L)
Application Method: Spot spray
Application Rate: 1.6L/100L water
Product Name: Roundup CT®
Herbicide Group: 9
Situation: Non-crop areas and pastures.
Timing: Spot spray, September - May
Comments:
Non selective, avoid contact with desirable plants.
Variable results.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L)
Application Method: Wiper
Application Rate: 500mL/10L
Product Name: Tussock™
Herbicide Group: 0
Situation: Non-crop areas and pastures.
Timing: Wiper, July - October
Comments:
- A slow-working residual.
- Add a non-ionic surfactant.
- Apply once per season.
- Apply early in the season.
Legal Status: PER 9792 (exp. 2025)
flupropanate (745g/L) + glyphosate (450g/L)
Application Method: Spot spray
Application Rate: 200mL + 1.6L/100L
Product Name: Tussock™ + Roundup CT®
Herbicide Group: 0, 9
Situation: Non-crop areas and pastures.
Timing: Spot spray, July - October
Comments:
- Use the higher rate for dense infestations.
- Apply to fresh foliage.
- Slashing to promote fresh growth 2-3 weeks before spraying will increase effectiveness.
- Non selective, avoid contact with desirable plants.
- Residues in the soil may suppress weeds and other susceptible species for one to two years.
Legal Status: PER 9792 (exp. 2025)
Legal requirements in each region
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Alinytjara Wiluṟara Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Alinytjara Wiluṟara Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Eyre Peninsula Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Eyre Peninsula Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Green Adelaide Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Green Adelaide Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Hills and Fleurieu Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Hills and Fleurieu Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Kangaroo Island Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Kangaroo Island Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Limestone Coast Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Limestone Coast Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Murraylands and Riverland Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Murraylands and Riverland Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the Northern and Yorke Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the Northern and Yorke Landscape Board of any infestation of the plant found on their land.
Land owners in this region to take reasonable steps to kill plants and prevent their spread. Enforceable by the South Australian Arid Lands Landscape Board.
Must not be sold or traded in any way, including as a contaminant of anything.
Must not be transported on a public road, including as a contaminant of anything.
land owners in this region must notify the South Australian Arid Lands Landscape Board of any infestation of the plant found on their land.
More Information
Find out how to:
- benefit from the early intervention of new and emerging weeds - handbook
- best manage your use and storage of agricultural and veterinary chemicals.
Control advice
For further help and advice managing this weed contact your regional landscape board: