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au crop smart herbicide metsulfuron 500 g - 1, thumbnail

Metsulfuron, 500 g


In stock

Australia Store cannot dispatch to

United States

Metsulfuron, 500 g

au crop smart herbicide metsulfuron 500 g - 1

Metsulfuron, 500 g

In stock

- +

In stock

Australia Store cannot dispatch to

United States

Can be used by
Population, Professionals

Product information

Metsulfuron 600 WG is a selective systemic herbicide which is adsorbed through the roots and foliage with rapid translocation acting by inhibiting cell division in meristems thus stopping growth. Some crops are very sensitive to low concentrations of this product. If treatment is delayed or if weeds are not actively growing due to adverse conditions,  the results may be slow to appear and weeds may only be dwarfed or suppressed.

Instructions specific for cereals: Except of the preplant weed control recommendations, apply at the early post emergence stage of the crop when weeds are small and actively growing. Excellent  weed control is obtained when rainfall wets the soil to a depth of 5 to 7.5cm within 4 weeks of application. If treatment is delayed or if weeds are not actively growing due to adverse conditions, results may appear slowly and weeds may be only stunted or suppressed (eg. Indian Hedge Mustard). It will remain in the soil for a period of time. The persistence of this product in the soil is dependent on various environmental conditions e.g. soil pH, temperature, soil moisture and organic matter.

Wet, warm, acid soils high in organic matter favour breakdown of Metsulfuron in the soil. It does not provide a commercially acceptable level of soil residual weed control. Crops other than wheat, barley, triticale and cereal rye may be extremely sensitive to low concentrations of Metsulfuron residues in the sprayer or in the soil.

The recommendation of addition of Metsulfuron to Glyphosate 450 and Weedmaster 600CT as a pre-plant knockdown is to enhance the control of certain broadleaf weeds (e. G. Doublegee, Sorrel, Erodium, Clover, Medic and Soursob) and to help prevent the risk of resistant weeds occurring. Its purpose is not to provide residual control of weeds.
Instructions specific for brush and herbaceous weed control: Apply when bushes/plants are actively growing. If treatment is delayed or bushes/plants are not actively growing due to adverse conditions or if partial spray coverage occurs, results may be slow to appear and subsequent regrowth may occur. Should regrowth occur, re-treatment at the suggested rate is advised. Re-treatment of blackberries should only be undertaken once regrowth has reached 1 metre tall - this may not be until 2 years after the initial application.
To control the bushes previously sprayed with other brush control herbicides or for bushes which may have been burned or slashed ensure 2 years has elapsed. Due to the widespread picking of blackberries by the public, it is suggested that the product is not applied to bushes bearing mature fruit.

DO NOT use in winter cereal crops undersown with legume pasture species, e.g. medics, clovers.
DO NOT use to wheat varieties King, Jacup, Milling and Harrier. Care should be taken if it is intended to apply it in the same season to a crop already treated with another sulfonylurea herbicide as crop damage may occur.

DO NOT apply other sulfonylurea herbicides in a tank mix with Metsulfuron as a pre-plant application.  If you use this product on land having a soil pH of 5.5 or less may result in some crop retardation, particularly if the crop is stressed.

Metsulfuron is a dry flowable formulation to be mixed with water and applied as a spray. Partially fill the spray tank with water. Using the measuring cone provided, measure the amount of herbicide required for the area to be sprayed. Add the correct amount of Metsulfuron 600 WG  to the spray tank with the agitation system engaged. Top up to the correct volume with water. THE MATERIAL HAS TO BE KEPT IN SUSPENSION AT ALL TIMES BY CONTINUOUS AGITATION.

If prepared spray solution has been allowed to stand,thoroughly re-agitate before using.
In tank mixes must be in suspension before adding the companion herbicide or surfactant. For application of Metsulfuron in liquid fertiliser, slurry the herbicide in water then thoroughly mix the slurry into the liquid fertiliser. Check compatibility before mixing Metsulfuron in fertiliser solutions. DO NOT add a surfactant/wetting agent. 

Use a boom spray property calibrated to a constant speed and rate of delivery to ensure good  coverage and a uniform spray pattern. Adjust boom height to make sure correct spray overlap. Do not spray where drift can go onto crops, are likely to be planted crops and non target pastures as injury may occur. Do not overlap and shut off spray booms while starting, turning, slowing or stopping as injury to the crop may result.
Cereals: Apply a minimum of 50 L prepared spray/ha.
Pasture: Apply a minimum of 70 L prepared spray/ha.
Other use patterns: Apply in a minimum of 150 L prepared spray/ha. Increase to 200L prepared spray/ha or more in dense stands. 

Do not spray in still conditions and in winds likely to cause drift onto adjacent sensitive crops or fallow areas likely to be planted to these crops. Turn off spray boom whilst passing over creeks and dams. DO NOT use when a temperature air inversion is likely to occur. Use of Micronair equipment is not suggested due to greater drift potential. Apply a minimum of 20 L/ha water. If applied in a higher water volume of 30 L/ha will improve the reliability of weed efficacy.

Other use patterns: helicopter only apply a minimum of 100 L per ha on Blackberries or 60 L per ha on Mimosa pigra and up to 200 L prepared spray/ha. Higher water volumes may be necessary to make sure adequate coverage where bushes are large and terrain is steep. Spray with a properly calibrated helicopter using the half overlap opposite pass technique.

Pastures and Other use patterns spray foliage and canes until wet. Make sure the coverage is uniform and complete. Use pressures of 550-750 kPa depending on target species and size of bush. Use larger nozzles and higher pressures for larger bushes.

Size No. 4 or 5 spray nozzle: small individual bushes or broadleaf weeds- less than 1m high
Size No. 5 or 6 spray nozzle:medium sized bushes - 1.2m high
Size No. 7 or 8 spray nozzle: large bushes 2-3m high or of a large diameter
Note: Use large spray nozzle/high volume for blackberry regrowth.
Use a wide cone setting  when spraying as much as possible. Use side-by-side spray pattern moving up from the base to the top of the bush as leaves are wet. For blackberries, do not ignore runners to the side or the top of the bush and ensure spray penetrates larger bushes
to wet foliage and canes.

DO NOT use or drain or flush equipment on or near desirable trees or other plants or on areas where their roots may extend or in locations where the chemical may be washed or moved into contact with their roots.
DO NOT apply or let spray to drift onto adjacent crops and non-target desirable plants, or onto agricultural land scheduled to be planted to other crops as injury to the
crop may occur.


A nonexistent withholding period is applicable for Metsulfuron. It is recommended, however, not to graze treated areas for 2 to 3 days to ensure product efficacy.

DO NOT contaminate streams, rivers or waterways with the chemicals or used containers. 


KEEP OUT OF REACH OF CHILDREN. Store in the closed, original container in a dry, cool, well-ventilated area, out of direct sunlight. Triple or preferably rinse containers before disposal. Add rinsings to spray tank. DO NOT dispose of undiluted chemical on site. If recycling,
change cap and return clean containers to recycler or designated collection point. If not recycling, break, crush, or puncture and bury empty containers in a local authority landfill. If no landfill is available, bury the containers below 500mm in a disposal pit specifically marked and set up for this purpose clear of waterways, desirable vegetation and tree roots. Empty containers and product should not be burnt.

Additional Information

Manufacturer Crop Smart
Packaging 500 g
Destination use Population, Professionals
Formulations WG-water dispersible granules
Active Substances Metsulfuron-methyl
Active Substance Concentration 600 g/kg
Against Capeweed, Charlock, Chickweed, Climbing buckwheat, Clover, Common ice-plant, Doublegee, Fat hen, Soldier Thistle, Sorrel seedlings, Tares, Tree hogweed, Turnip weed, Vetches, Wards weed, Wild mustard, Wild radish, Wild turnip
Crops Barley, Grass, Oat, Rye, Wheat
Dosage 5-10 g/ha
Timing of application Postemergence
Types of weeds annual dicotyledonous, perennial dicotyledonous
Application Type Low pressure spray

Precautionary Statements

P102 Keep out of reach of children
P103 Read label before use
P273 Avoid release to the environment
P301+P312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
H302 Harmful if swallowed
H332 Harmful if inhaled.

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