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Glyfos Classic 450


APVMA Code :58445

Active Constituent(s):

450g/L glyphosate

(present as isopropylamine salt)

Registered For:


 Commercial use

 Domestic use

Overview: Water soluble herbicide for non-selective control of many annual and perennial weeds.

Chemical Group glycine


 SDS (295.2 KB)

 Label (314.5 KB)

General Instructions


This product is a non-selective herbicide. It is absorbed by plant foliage and green stems and is translocated through the plant from point of contact into the root system. The effects of this product may not be apparent for 4 to 7 days depending on weather conditions, weed species and the herbicide use rate. Some perennial weeds may not show effects for 10 to 20 days. Avoid grazing weeds after spraying for 12 to 18 hours (annual weeds) or 7 to 10 days (perennial weeds) to allow translocation of this product through the weeds. This product will control emerged weeds only, and provides no residual control. Use of clean water is essential as glyphosate is deactivated by clay particles.


Crop Establishment

GLYPHOS CLASSIC 450 is recommended for control of emerged weeds prior to crop establishment Suitable cultivation and/or sowing operations are required to provide seed bed conditons satisfactory for crop germination and development. Spraying early to control young weeds will favour preparation of suitable seed beds. On friable soils and where there is only light cover of young weeds, sowing may proceed satisfactorily from one day after spraying. In situations of heavy weed growth sowing should be delayed until weed decay and soil conditions allow formation of a satisfactory seed bed. Incorporation of green or decaying vegetation and roots into the seebed by cultivation or sowing may cause retarded crop emergence, particularly in cold and/or wet conditions. Vegetation may be reduced by grazing and weed decay may be assisted by cultivation to leave trash on the surface. In marginal seedbed conditions take care to achieve correct seeding depth, and avoid use of pre-emergence herbicides where label directions advise of retarded crop emergence.




  1. Spray tank should be free of any previous spray chemicals. A suitable tank cleaning agent is recommended.
  2. Half fill spray tank with clean water, add required amount of this product, then fill with clean water. Add surfactant last.
  3. Agitate well before spraying.
  4. When tank mixing with other compatible chemicals add this product after other water soluble products but before fl owables e.g. Flowable Diuron.

IMPORTANT: This product should only be stored and applied in plastic or plastic lined containers, aluminium, brass, copper, stainless steel or fi breglass containers. The contact of this product with unlined or galvanised steel may cause a highly fl ammable gas to form causing a potential explosion if ignited by any ignition source (open flame, etc).


Surfactant Addition

The addition of a 100% non-ionic surfactant at label rate is recommended with this product in all situations where the ratio of this product vol/ha is 2% or less of the total spray volume.


Tank Mixtures

This product can be tank mixed with chlorsulfuron in fallow or pre-sowing, to provide knockdown and residual control. Observe respective label for Directions for Use and Crop Rotation recommendations. This product and 2,4-D Ester may be tank mixed for improved control of certain broadleaf weeds. Observe regional restrictions, plant back periods and cautions on the 2,4-D Ester label. This product can be tank mixed with Dicamba 200 for improved control of Sorrel, Sub clover, Medics and White clover.



For knockdown and residual control this product can be tank mixed with either Flowable Simazine or Flowable Atrazine. Please observe Directions for Use table and crops suitable on the respective labels. When tank mixing these products the addition of a crystaline ammonium sulphate is recommended to avoid antagonism at a rate of 2 kg/100 L spray solution. DO NOT apply tank mix by air. WARNING: Mixtures of this product and atrazine do not control Barnyard grass.




  1. BOOM EQUIPMENT: A spray volume of 25-100 L/ha is recommended. Ensure a double overlap of nozzle patterns at the top of the weed canopy. NOTE: Fan nozzle equipment should be used, at pressures in the range of 240-280 kPa.
  2. AERIAL EQUIPMENT: This product may be aerially applied in pasture or fallow situations prior to establishment of field crops, fodder crops or new pasture and for pre-harvest application to sorghum crops. DO NOT use in intensive horticultural cropping areas. Use recommended rates of GLYPHOS CLASSIC 450 specifi ed in this label up to a maximum limit of 3.2 L/ha. For Micronair and boom equipment, apply in a minimum spray volume of at least 20 L/ha. Droplets with an average size (or VMD) of 250-350 micron diameter are recommended. Swath width should be 15-17 m. Thoroughly wash aircraft, especially landing gear, after each day of spraying to remove herbicide residues.


Application on hilly terrain

As spraying height may vary, to maximise target contact, increase water volume to 30-80 L/ha, and increase droplest size to at least 300 micron VMD. Application procedure in hot conditions


It is recommended that when the temperature reaches 24C to 26C, increase water volume to at least 30-35 L/ha and increase droplet size to at least 300 micron VMD. Aerial application is not recommended at temperatures above 32C.



Wiper equipment (ropewick applicators) may be used to apply this product on to weeds growing in oilseed crops, sugar cane, seed and pod vegetables, and tree and vine crops specifi ed in this label, and in pasture and non-crop areas. Avoid contact with desirable vegetation. Operate wiper equipment a minimum of 10 cm above the crop or pasture. Weeds should be at least 15 cm above the crop or pasture at time of application. Speed of travel should be no greater than 8 km/h. Best results are achieved at lower speeds and where two applications are made in opposite directions (double pass). Where weeds are of variable height, or occur in dense infestations or clumps, some plants may not be contacted by the herbicide solution. In these cases repeat treatment may be necessary. Mix only enough herbicide solution for immediate requirements. DO NOT store mixed solution for more than a few days. Flush out equipment with water after use. Rate: Mix 1 litre of this product with 2 litres clean water to prepare 33% solution. This product may be used according to the above directions for suppression or control of many annual and perennial weeds. See WEEDS CONTROLLED tables for specific use recommendations.


Cleaning Spray Equipment

Take careful precautions with regard to the washing of all spray equipment after each day of spraying. Using clean water, wash spray tank, nozzles, pumps, etc. Aircraft should be thoroughly washed, especially landing gear, after each day of spraying. Spray tanks, pumps, lines and nozzles should be thoroughly rinsed with clean water following application to prevent corrosion.




DO NOT disturb weeds by cultivation, sowing or grazing for 1 day after treatment of annual weeds and 7 days for perennial weeds except where stated.


DO NOT use dirty or hard water when mixing.


DO NOT apply if rain is expected in the next 6 hours.


DO NOT apply to plants suffering from stress.


Resistance Warning


GLYPHOS CLASSIC 450 is a member of the Glycine group of herbicides. GLYPHOS CLASSIC 450 has the EPSP synthase inhibitor mode of action. For weed resistance management GLYPHOS CLASSIC 450 is a Group M Herbicide. Some naturally occurring weed biotypes resistant to GLYPHOSATE and other Group M 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. The resistant weeds will not be controlled by GLYPHOS CLASSIC 450 or other Group M herbicides. Since the occurrence of resistant weeds is diffi cult to detect prior to use, Cheminova Pty. Ltd. accept no liability for any losses that may result from the failure of GLYPHOS CLASSIC 450 to control resistant weeds. However, resistance should not be assumed without fi rst viewing the method of application, the coverage and the timing of application.


Protection of wildlife, fish, crustaceans and environment

DO NOT contaminate dams, rivers or streams with the product or used container.


DO NOT apply to weeds growing in or over water.


DO NOT spray across open bodies of water, and

DO NOT allow spray to enter water.


DO NOT allow water to return to dry channels within 4 days of application.


Protection of crop, native and other non-target plants

Avoid contact with foliage, green stems or fruit of crops, desirable plants and trees, since severe injury or destruction may result.


DO NOT apply under weather conditions, or from spraying equipment, that may cause spray to drift onto nearby susceptible plants/crops, cropping lands or pastures.


Safety Directions


Product will irritate eyes and skin. Avoid contact with eyes and skin. When preparing product for use wear elbow-length PVC gloves and face shield or goggles. When using controlled droplet applicator wear protective waterproof clothing and impervious footwear. After use and before eating, drinking or smoking, wash hands, arms and face thoroughly with soap and water. After each day's use, wash gloves, face shield or goggles and contaminated clothing.


Storage 20 L, 110 L

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


Disposal 20 L, 110 L

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 (contact drumMuster Collection agency or Local Council for collection sites). 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 500 mm 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.


For refillable containers (1000L), empty contents fully into application equipment. Close all valves and return to point of supply for refill or storage.


Product details last updated on 27 Jan 2010


DISCLAIMER: This is not the GLYFOS CLASSIC 450 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

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