|
Stage of growth* |
Herbicide (Active ingredient) |
Commercial product (Content of active ingredient)** |
With-holding Period (Days) |
Application rate of Commercial product per hectare |
Comments |
|
Seedlings and small rosettes up to 50 mm diameter |
MCPA sodium salt
MCPA amine |
(250 g/L formulations)
(500 g/L formulations) |
7 days |
1.0-2.0 L
0.5-1 L |
Use the lower rate for seedlings, the higher rate for rosettes to 50 mm in diameter |
|
Rosettes*** |
2,4-D amine
2,4-D ester |
(500 g/L formulations)
Low Volatile Ester 400 Herbicide® (400 g/L)
LV 2,4-D Ester 600 Selective Herbicide®
(600 g/L) |
7 days
7 days
7 days |
4.8 L
6.0 L
4.0 L |
For plants up to the rosette stage. Some regrowth may occur from large multi-crown plants
Apply up to the late rosette stage. Severe clover damage will result from application at this rate. |
|
|
metsulfuron methyl |
Brush-Off® (600g/kg)
Renovate® (600g/kg) |
nil |
10 - 15 g |
Apply to actively growing plants. Clover damage is likely.Residual activity against clovers is likely. |
* Boom spraying is not recommended after the rosette stage of growth.
** See notes on herbicide formulations.
*** Some regrowth may be expected from large multi-crown plants.
|
Stage of growth |
Herbicide (Active ingredient) |
Commercial product (Content of active ingredient) |
With-holding Period (Days) |
Application rate per plant Commercial product |
Comments |
|
Rosettes:
single-crown plants |
dicamba
picloram |
Banvel 100G®
(100 g/kg)
Tordon Granules®
(20 g/kg) |
7 days
Nil |
2 g
2 g |
Apply to centre of plant
Apply to crushed centre of plant |
|
Rosettes:
multi-crown plants |
dicamba
picloram |
Banvel 100G®
(100 g/kg)
Tordon Granules®
(20 g/kg) |
7 days
Nil |
3-5 g
2 g |
Use higher rate on larger plants. Some regrowth may be expected from large multi-crown plants
Apply to crushed centre of plant |
|
Stage of growth |
Herbicide (Active ingredient) |
Commercial product (Content of active ingredient) |
With-holding Period (Days) |
Application rate of Commercial product |
Comments |
|
Shooting and early flowering plants |
clopyralid
metsulfuron methyl |
Lontrel®
(300 g/L)
Brush-Off®
(600 g/kg)
Renovate®
(600g/kg) |
7 days
Nil |
1L of product to 2 litres of water
1g per litre of water |
Plants need to be actively growing. A height differential is required between the ragwort and the clover |
|
Stage of growth* |
Herbicide (Active ingredient) |
Commercial product
(Content of active ingredient)** |
With-holding period (days) |
Application rate of Commercial product
per L |
Comments |
|
Rosettes: single-crown plants |
2,4-D ester
clopyralid
metsulfuron methyl |
(400 g/L formulation)
Lontrel®
(300 g/L)
Brush-Off®
(600 g/kg)
Renovate®
(600g/kg) |
7 days
7 days
Nil |
6 mL
2 mL
0.05 g |
Add surfactant.
Add surfactant. Apply to actively growing plants. |
|
Rosettes: multi-crown plants** |
2,4-D ester
clopyralid
metsulfuron methyl |
Low Volatile Ester®
(400 g/L)
Lontrel®
(300 g/L)
Brush-Off®
(600 g/kg) Renovate® (600g/kg) |
7 days
7 days
Nil |
10 mL
4 mL
0.05 g |
Add surfactant.
Add surfactant. Apply to actively growing plants. |
|
Shooting plants*** |
2,4-D ester
clopyralid
metsulfuron methyl |
(400 g/L formulation)
Lontrel®
(300 g/L)
Brush-Off®
(600 g/kg) Renovate® (600g/kg) |
7 days
7 days
Nil |
10 mL
4 mL
0.05 g |
Add surfactant.
Add surfactant. Apply to actively growing plants. |
|
Flowering plants***§
|
2,4-D ester
or
clopyralid
plus
diquat#
metsulfuron methyl |
(400 g/L formulation)
Lontrel®
(300 g/L)
(200 g/L formulation)
Brush-Off®
(600 g/kg)
Renovate®
(600g/kg) |
7 days
7 days
7 days
Nil |
6 mL
2 mL
10 mL
0.05 g |
Use either 2,4-D or Lontrel with a diquat product. Addition of a surfactant is essential
Add surfactant. Apply to actively growing plants. |
* The rosette stage of growth is the preferred stage for effective chemical control.
** See notes on herbicide formulations below.
*** Some regrowth may be expected from large multi-crown plants and from shooting and flowering plants.
§ Apply to flowering plants before flower heads begin browning-off.
# Clean water is essential when using diquat.
