Home LEADProductsManufacturingNewsContact

Chlorsulfuron 750 WG


APVMA Code :59542

Active Constituent(s): 750kg chlorsulfuron
Registered For:


 Commercial use

 Domestic use

Overview: A selective herbicide for the control of Annual (Wimmera) Ryegrass and certain broadleaved weeds in Wheat, Barley, Oats, Cereal Rye and Triticale.

Chemical Group sulfonylurea


 SDS (279.9 KB)

 Label (484 KB)

General Instructions


Spray Preparation


This product is a water dispersible granule.

  1. Fill tank partially with water and engage full agitation.
  2. Add the required amount. (N.B. The measuring flask provided is graduated in grams of Cheminova Chlorsulfuron 750WG Herbicide only. DO NOT use for measuring of other materials.)
  3. Top up with water to the required volume.
  4. Companion products: If applying this product with another product ensure this product has completely dissolved before adding the companion product.
  5. Cheminova Chlorsulfuron 750WG Herbicide must be kept in suspension at all times by continuous agitation. Where prepared spray mixes have been allowed to stand, thoroughly re-agitate before using.

Use of Surfactant/Wetting Agent

For post-emergence application, always add a non-ionic surfactant (1000 gac/L) at 100 mL/100 L of final spray volume (0.1% volume/volume).


The use of spraying oils is not recommended.


NOTE: DO NOT add a surfactant/wetting agent when this product is tank mixed with another product which already has a surfactant/wetting agent in the formulation.


Ground Spraying Equipment

Use a boom spray properly calibrated to a constant speed and rate of delivery to ensure thorough coverage and a uniform spray pattern. Avoid overlapping and shut off spray booms while starting, turning, slowing or stopping as injury to the crop may result. Apply a minimum of 30 L prepared spray/ha.


Aerial Application

Apply a minimum of 20 L/ha water. Avoid spraying in still conditions and in winds likely to cause drift onto adjacent sensitive crops. Avoid spraying where drift can go onto areas likely to be sown to sensitive crops - see Crop Rotation Recommendations. Turn off spray boom whilst passing over creeks and dams.


Sprayer Cleanup

It is essential that the sprayer be properly cleaned after using this product prevent injury to crops other than wheat, triticale, barley, oats, or cereal rye.


All traces of Cheminova Chlorsulfuron 750WG Herbicide should be removed form equipment using the following procedure:

  1. Drain tank, then flush tank, boom and hoses with clean water for a minimum of 10 minutes.
  2. Fill the tank with clean water then add 300 mL household chlorine bleach (containing 4% chlorine) per 100 L of water. Flush through boom and hoses then allow to sit for 15 minutes with agitation engaged, then drain.
  3. Repeat Step 2.
  4. Nozzles and screens should be removed and cleaned separately. To remove traces of chlorine bleach, rinse the tank thoroughly with clean water and flush through hoses and boom.

CAUTION: DO NOT use chlorine bleach with ammonia. All traces of liquid fertiliser containing ammonia, ammonium nitrate or ammonium sulphate must be rinsed with water from the mixing and application equipment before adding chlorine bleach solution. Failure to do so will release a gas with a musty chlorine odour which can cause eye, nose, throat and lung irritation. DO NOT clean equipment in an enclosed area.



This product is compatible with glyphosate and paraquat. This product does not control Wild Oats, however it is compatible with Wild Oat herbicides Avadex BW, Mataven and Puma S. It is also compatible with Bromoxynil, MCPA (and Bromoxynil/MCPA mixtures), 2,4-D amine and 2,4-D ester, Lontrel, Tigrex and Jaguar. This product is also compatible with trifluralin and the insecticides omethoate, dimethoate deltamethrin and chlorpyrifos.


This product is a selective herbicide designed to control certain weeds in wheat, triticale, barley, oats and cereal rye.


This product is suitable as a pre-sowing treatment for wheat and triticale, and as a post-sowing treatment for wheat, triticale, barley, oats and cereal rye. When used on emerged weeds, the product is absorbed by foliage and green stems and moves into the root system.


Prior to using this product, careful consideration should be given to soil pH. As soil pH increases, rate of breakdown decreases. This product should not be used on soil pH 8.6 or higher as extended soil residual activity could adversely affect crop rotation options beyond normal intervals.

This product should not be used on soils with a pH of 8.6 or higher as soil residual activity could adversely affect following crops and crop rotation intervals may be extended beyond normal intervals.


Crops other than wheat, barley, oats, triticale and cereal rye can be extremely sensitive to low concentrations of this product in the soil. See Crop Rotation Recommendations.


Best weed control is obtained when rainfall or sprinkler irrigation wets the soil to a depth of 5 to 7.5 cm within 4 weeks of application.


Pre-sowing incorporated by sowing:

WA only - Avoid applying to dry sandy soils as rapid leaching may occur with early season rains.


SA only - Before using rates greater than 15 g/ha on light to medium soils pH 7 to 8.5, seek further advice.


Conventionally Sown Crops - on soils less than 7, apply a spray just before sowing or in conjunction with the sowing operation. On soils of pH of 7 or greater it is not critical to time the spray just before sowing. Spray onto a non-ridged surface free of large clods. Use low profi le 10 cm combine points for sowing. Sow at speeds of 10 kph or greater. Use light covering harrows at sowing. If applied to dry soil and sowing is to be delayed, incorporate immediately after spraying to prevent loss by wind erosion.


Direct Drilled Crops - apply tank mixed with either Spray Seed1 or glyphosate in accordance with manufacturer's label recommendations.


Post Crop and Weed Emergence:

Where treatment is delayed or where weeds are not actively growing due to adverse conditions results may be slow to appear and weeds may be only stunted or suppressed.


Wheat, Triticale and Cereal Rye - apply after crop emergence when weeds are small and actively growing (Annual Ryegrass no more than 3 leaves, Broadleaved weeds no more than 5 cm in height or diameter (for Black Bindweed refer to specific recommendations).

Barley and Oats - apply between 2 leaf stage of crop (3 leaf stage - SA only) and early tillering when weeds are small and actively growing (Annual Ryegrass no more than 3 leaves, Broadleaved weeds no more than 5 cm in height or diameter (for Black Bindweed refer to specific recommendations).


Grazing Advice

Avoid grazing treated areas within 24 hours of application to optimise weed control.


A nil withholding period is applicable for grazing Cheminova Chlorsulfuron 750WG Herbicide treated areas (when used as directed on this label).


Crop Safety

DO NOT use this product for:

  • crops other than cereals.
  • cereals irrigated by furrows or flooding.
  • winter cereals undersown with legume pasture crops.
  • weed control where crops are under stress. Damage can occur where crops are stressed due to conditions such as excessive soil alkalinity or acidity, poor nutrient status, disease, nematode or insect infestation, adverse weather conditions, drought or waterlogging. If crops become stressed after spraying, they may turn yellow or become retarded, but usually they will recover with no reduction in yield.



DO NOT use this product for:

  • wheat varieties Cranbrook, or Miling.
  • the wheat variety Vulcan if on acid soils and under stress conditions caused by waterlogging, frost, aluminium or manganese toxicity; reduced yields may result.
  • pre-sowing treatment of weeds in wheat varieties Avocet and Durati (OK for post-emergent use).
  • pre-sowing treatment of weeds in wheat variety Banks if soil pH is 5.5 or less (OK for post-emergent use).


Barley and Oats:

DO NOT use this product for:

  • application before the crop has reached the 2-leaf stage (3-leaf stage in SA).
  • Stirling barley.
  • barley under waterlogged conditions (yield may be reduced).

The application of other sulfonylurea herbicides following this product is not recommended.


Crop Rotation Recommendations

Land previously treated with this product should not be rotated to other crops other than those listed in the following tables.


Tolerance of other crops (grown through to maturity) should be determined on a small scale before sowing into larger areas.


The treated areas may be replanted to any of the specified crops after the interval indicated in the following tables:-




DO NOT spray emerged crops if rain is expected within four hours.



After mixing in the tank, spray within 48 hours if this product is used by itself, or within 24 hours if mixed with another product.

DO NOT apply to plants suffering stress.


Resistance Warning


Cheminova Chlorsulfuron 750WG Herbicide is a member of the sulfonylurea group of herbicides. Cheminova Chlorsulfuron 750WG Herbicide has the inhibitor of the enzyme acetolactate synthase (ALS) mode of action. For weed resistance management, Cheminova Chlorsulfuron 750WG Herbicide is a Group B herbicide.


Some naturally occurring weed biotypes resistant to the product and other Group B herbicides may exist through normal genetic variability in any weed population.


The resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly. These resistant weeds will not be controlled by Cheminova Chlorsulfuron 750WG Herbicide or any other Group B herbicides.


Annual Ryegrass biotypes resistant to diclofop-methyl and other "grass specific" herbicides are often also resistant to Cheminova Chlorsulfuron 750WG Herbicide. Before using Cheminova Chlorsulfuron 750WG Herbicide on a population resistant to "grass specific" herbicides, have a resistance test conducted to ensure that it is still susceptible to Cheminova Chlorsulfuron 750WG Herbicide.


Since the occurrence of resistant weeds is difficult to detect prior to use, Cheminova accepts no liability for any losses that may result from the failure of Cheminova Chlorsulfuron 750WG Herbicide to control resistant weeds.


To prevent, or at least minimise the risk of resistant weeds occurring, use Cheminova Chlorsulfuron 750WG Herbicide in tank mixes (if appropriate) and/or rotations with herbicides having different modes of action effective on the same weed species.


Large numbers of healthy surviving weeds can be an indication that resistance is developing. Efforts should be taken to prevent seed set of these survivors.


DO NOT make more than one application of an ALS inhibitor herbicide to a crop, either pre-sowing incorporated by sowing or post crop and weed emergence.


If the user suspects that an ALS inhibitor-resistant weed is present, Cheminova Chlorsulfuron 750WG Herbicide or other Group B herbicides should not be used.


Strategies to minimise the risk of herbicide resistance are available. Consult your farm chemical supplier, consultant, local Department of Agriculture or Primary Industries.


Protection of wildlife, fish, crustaceans and environment

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


Protection of crop, native and other non-target plants

DO NOT apply 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 under meteorological conditions or from spraying equipment which could be expected to cause spray to drift onto nearby susceptible plants, adjacent crops, crop lands or pastures


Safety Directions


Avoid contact with eyes and skin. DO NOT inhale spray mist. Wash hands after use.



Store in the closed, original container in a well ventilated area, as cool as possible. DO NOT store for prolonged periods in direct sunlight.



Triple or preferably pressure rinse containers before disposal. Add rinsings to spray tank. Do not dispose of undiluted chemicals on site. If recycling, replace 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 landfi ll. 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.


Product details last updated on 28 Jun 2010


DISCLAIMER: This is not the CHLORSULFURON 750WG label. To view or print the label for this product, click the "MSDS/Label" tab at the top of this page. Always follow label instructions.


For specialist advice in an EMERGENCY only phone 1800 033 111, TOLL-FREE, ALL-HOURS, NATIONWIDE

To the topTo the top
Alphabetical index  Ι  Sitemap  Ι  Disclaimer  Ι  Sales terms and conditions  Ι  Useful links