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Metsulfuron 600 WG


Product:

APVMA Code :59544

Active Constituent(s): 600g/kg metsulfuron-methyl
Registered For:

 

 Commercial use

 Domestic use

Overview: For control of certain brush and broadleaf species in native pastures, rights of way and commercial and industrial areas and for the control of certain broadleaf weeds in winter cereal crops.

Chemical Group sulfonylurea

Documents:

 MSDS (299.5 KB)

 Label (1.1 MB)


General Instructions

 

BRUSH APPLICATIONS, ESTABLISHED PASTURES AND PASTURE RENOVATION

Cheminova Metsulfuron 600WG Herbicide is a selective herbicide which is rapidly absorbed by roots and leaves.

  • Always add a surfactant/wetting agent
  • Best results are achieved when;
  • application is made to actively growing plants which are not stressed by any factors such as dry weather conditions, waterlogging etc
  • Plants to be treated are thoroughly covered. This is essential to achieve maximum herbicide uptake.
  • Regrowth may occur if the product is applied when plants are stressed or if complete spray coverage is not achieved. If regrowth does occur, retreatment at the rates on this label is recommended. For blackberries re-treatment should only be undertaken if plants are at least 1 metre tall. This may not be until 2 years after the initial application. Legumes are extremely sensitive to Cheminova Metsulfuron 600WG Herbicide and will be removed from the pasture if over sprayed.
  • Introduced grass species may be severely damaged if oversprayed.
  • Application to weeds that are not actively due to adverse conditions may result in weeds only being stunted or suppressed
  • Some grasses will be damaged in pasture sprayed with this product and biomass production may be reduced for several months
  • If weeds have been previously sprayed with other herbicides or if the weeds have been burned or slashed ensure 2 years have elapsed before treating with Cheminova Metsulfuron 600WG Herbicide.
  • It is recommended that this product not be applied to bushes bearing mature blackberries due to the collection of blackberries for food purposes
  • Some temporary yellowing and some stunting may occur when used on Perennial Phalaris and/or established Perennial cocksfoot
  • All grasses and legumes can be damaged and/or removed by a Cheminova Metsulfuron 600WG/Glyphosate mixture
  • The following weeds will not be controlled; Barley grass (Hordeum leporinum) Brome grass (Bromus unioloides), Silvergrass (Vulpia spp.), Winter Grass (Poa annua).
  • Best results will be achieved if weeds are allowed to recover from grazing prior to herbicide application to allow for adequate uptake of the product. Sorrel and Docks particularly require new leaf growth.

 

INSTRUCTIONS SPECIFIC TO ESTABLISHED PASTURES AND PASTURE RENOVATION

  • Some sorrel seedlings may germinate after the break the following year
  • Ungerminated clover will not be affected but seed set of clover in the year following application will be significantly reduced. If seed banks are not large, it may be necessary to re-sow clover
  • For Pasture Topping situations this product may be mixed with glyphosate but ensure crop rotation recommendations are observed. Refer to the Directions for use for each target weed on each product label.

 

CEREAL CROPS

Cheminova Metsulfuron 600WG Herbicide is a selective herbicide which can be used in Cereal crops at the early post emergence stage of the crop (3 leaf to before booting stage). It may also be applied before planting the crop ie. pre-plant. Best results are obtained if weeds are small (no larger than 5cm in height or diameter) and actively growing. To achieve good weed control, it is preferable that rainfall wets the soil to a depth of 5 to 75cm within 4 weeks of application. If application is not made when conditions and weed growth are optimum, results may be slow to appear and some weeds may only be suppressed or stunted.

 

For post emergent application, the product will remain in the soil for a period of time. The soil persistence will depend on environmental conditions such as soil pH, moisture, temperature and soil organic matter. Breakdown is faster in warm, wet acid soils and slowest in alkalaine, cold, dry soils. This product does NOT provide acceptable residual control.

 

Spray Preparation

 

ESTABLISHED PASTURES AND PASTURE RENOVATION

Cheminova Metsulfuron 600WG Herbicide is a dry flowable granule which must be mixed with clean water. Always add a wetting agent/surfactant (See "Use of surfactant/wetting agent" below)

  1. Partially fill the spray tank with water.
  2. With the agitation system engaged, add the required amount of product (as per Directions for Use table) to the tank using only the measuring device provided
  3. Add the remainder of the water
  4. Always maintain agitation to keep the product in suspension. If the spray solution is allowed to stand, thoroughly re agitate before using.

 

CEREAL CROPS

The product is a dry flowable granule which must be mixed with clean water

  1. Partially fill the spray tank with water
  2. With the agitation system engaged, add the required amount of product (as per Directions for Use Table) to the tank using only the measuring device provided
  3. Add the remainder of the water
  4. Always maintain agitation to keep the product in suspension. If the spray solution is allowed to stand, thoroughly re-agitate before using

If tank mixing with another product, ensure Cheminova Metsulfuron 500WG is in suspension before adding the other product to the tank. If using in conjunction with liquid fertilisers slurry the product in water before mixing the slurry into the liquid fertiliser. Do not add surfactants and check with the Department of Agriculture on compatibility.

 

Use of Surfactant/Wetting Agent

 

ESTABLISHED PASTURES AND PASTURE RENOVATION

Cheminova METSULFURON 600WG Herbicide alone - It is important that a surfactant/wetting agent is ALWAYS used with this product. If no specific wetting agent/surfactant is recommended in the directions for use table use a non-ionic surfactant (100%) at 100mL/100L of final spray volume

Cheminova METSULFURON 600WG Herbicide tank mixed with Glyphosate - Use a non ionic surfactant when mixing with glyphosate herbicide. In some tank mix situations the use of an organosilicone penetrant (eg Pulse) is recommended. This recommendation must be strictly followed in order to achieve adequate weed control

 

Gas gun applications - An organosilicone penetrant (eg Pulse) should be added at the rate of 10mL/5L or 200mL/100L of final spray volume

 

Where mineral spray oil is recommended use 1L/100L of final spray volume (ie 1% volume/volume) A non-ionic surfactant should still be used with this mixture. Always read the instructions on the companion product label when tank mixing.

 

CEREAL CROPS

Always add a non-ionic surfactant/wetting agent at the rate of 0.1% (active constituent) of final spray volume. The use of spraying oils is NOT recommended.

 

NOTE: DO NOT add a surfactant/wetting agent when tank mixing with terbutryn or diuron.

 

Application

 

ESTABLISHED PASTURES AND PASTURE RENOVATION

Cheminova METSULFURON 600WG Herbicide may be applied by air, handgun, boom spray or gas gun according to the Directions for Use table.

 

Handgun - Ensure complete and uniform coverage of all canes and foliage. Pressures of 550/50kPa(80-100psi) are recommended depending on size of bushes and target species. As an example

Use No 4 or 5 spray nozzle for individual bushes or broadleaf weeds less than 1 metre high. Use No 5 or 6 spray nozzle for bushes 1-2 m high and No 7 or 8 spray nozzle for large bushes 2-3 metres high or for bushes with a large diameter. When using 3g Cheminova Metsulfuron 600WG Herbicide + 400mL of Glyphosate 360 Herbicide pressures of greater than 800kPa should be used to assist penetration.

 

NOTE: For blackberry regrowth use the large spray nozzle/high volume with as wide a cone setting as possible. Use even, side by side spray pattern moving from the base to the top of the bush. For blackberries it is important that runners at the side and top of the bush are treated and that spray penetrates larger bushes to wet the foliage and canes.

 

Boom Spray - Ensure the boom is properly calibrated to a constant speed or rate of delivery for thorough coverage and uniform spray pattern. Fan nozzles using pressures of 240 to 280 kPa are recommended. Adjust the boom height to ensure correct spray overlap. Apply in a minimum of 150L prepared spray per hectare. Increase to 200L/ha or more for dense stands.

 

Gas Gun - Ensure thorough coverage. The use of a suitable dye is recommended to allow the operator to see which plants have been treated.

 

Aerial Application - (by helicopter only) Use a properly calibrated helicopter using the half overlap opposite pass technique. Apply a minimum of 100L/ha on blackberries and 60L/ha on Mimosa pigra up to a maximum of 200L prepared spray per hectare. Use a VMD of 300 microns. High temperatures and/or low humidity may cause excessive evaporation of droplets and may reduce results. Where bushes are large or terrain is steep higher water volumes are necessary to ensure adequate coverage. Avoid spraying in conditions which favour temperature inversions or in still conditions. Turn off boom when passing over creeks, dams or waterways. Avoid spraying where drift can move onto crop areas that are likely to be planted to crops and non target pastures as injury may occur. Do not apply when temperatures exceed 30C (except when treating M.pigra.

 

CEREAL CROPS

For control of weeds in winter cereal crops the product may be applied by ground or air

 

Ground Spraying

Ensure the boom is properly calibrated to a constant speed or rate of delivery for thorough coverage and uniform spray pattern. Avoid overlapping and shut off boom while starting, turning, slowing or stopping as injury to the crop may occur. Apply in a minimum of 50L prepared spray/ha.

 

Aerial Application

Apply in a minimum of 20L/ha. Application in higher water volumes may improve weed control reliability. Avoid spraying in conditions which favour temperature inversions, still conditions, or in winds likely to cause drift onto sensitive crops or fallow areas to be planted to sensitive crops. Turn off boom when passing over creeks, dams or waterways.

 

The use Micronair equipment is not recommended as the fine droplets emitted may lead to spray drift.

 

Tank Mixtures

In certain situations such as the presence of harder to kill species or in follow up treatment situations a tank mix with Glyphosate may provide improved weed control (see directions for use table).

 

Compatibility

 

ESTABLISHED PASTURES AND PASTURE RENOVATION

This product is compatible with glyphosate formulations and commonly used pasture herbicides such as MCPA Ester, 2,4-D Amine, Dicamba, Lontrel, Starane and commonly used insecticides such as chlorpyrifos and omethoate. Always refer to the companion product label for instructions/restrictions.

 

CEREAL CROPS

Cheminova Metsulfuron 600WG Herbicide is compatible with most commonly used broadleaf herbicides including Diuron Flowable, 2,4-D Amine, Broadstrike, Brominil M, Eclipse, Terbutryn, MCPA Ester, LVE MCPA, Jaguar, Tigrex, Tordon 242, Metribuzin, Lontrel, Dicamba, Starane, glyphosate.

The product is also compatible with commonly used insecticides such as chlorpyrifos and omethoate. Some temporary crop yellowing may occur with those mixtures. Other mixtures should be tested on a small scale before large areas are treated.

 

NOTE: The compatibility of Cheminova Metsulfuron 600WG Herbicide with grass herbicides varies between products and weed species (refer table below). DO NOT mix with Grasp Mataven 100.

 

Notes on Cheminova Metsulfuron 600WG/Diclofop methyl or Cheminova Metsulfuron 600WG/Tristar mixtures:

  1. Some reduction in grass weed control can be expected
  2. In heavily weed infested areas control may be inadequate (Victoria and Tasmania only)
  3. Significant reduction in grass weed control should be expected (SA only)
  4. Mixtures of Cheminova Metsulfuron 600WG and Diclofop methyl/Tristar are not recommended in WA as these mixtures will result in significant reduction in grass weed control and/or crop damage.

 

Crop Rotation Recommendations

 

ESTABLISHED PASTURES AND PASTURE RENOVATION

Many crop species are sensitive to Metsulfuron methyl. The product is broken down in the soil mainly by chemical hydrolysis and to a lesser degree by soil microbes. Other factors which affect breakdown are soil pH, soil moisture and temperature. Breakdown is faster in warm, wet, acid soils and slowest in alkaline, cold, dry soils.

 

Legumes will be removed from pasture if they are over sprayed with the product.

 

Other species which are sensitive to metsulfuron methyl are;

Barley, Canola, Cereal Rye, Chickpeas, Faba Beans, Japanese Millet, Linseed, Lupins, Lucerne, Maize, Medics, Oats, Panorama Millet, Peas, Safflower, Sorghum, Soybeans, Sub Clover, Sunflower, Triticale, Wheat, White French Millet.

The area sprayed with Cheminova Metsulfuron 600WG Herbicide may be replanted to the specified pasture species after the interval in the following table.

 

CEREAL CROPS

Many crop species are sensitive to metsulfuron methyl. The minimum recropping intervals are given in the table below. Do not rotate crops other than those listed below to land previously treated with Metsulfuron methyl. It is advisable to determine crop tolerance on a small scale before sowing larger areas.

 

Crop Safety

Do not apply to the wheat varieties Miling, Jacup, King or Harrier.

 

Do not apply to crops undersown with legumes as legumes will be seriously affected by the product.

 

Should the crop have been treated with another sulfonylurea herbicide eg Chlorsulfuron, consult your local representative or Department of Agriculture before application of Cheminova Metsulfuron 600WG as crop injury may occur.

 

Do not apply to crops that are stressed by any factor such as adverse environmental conditions, waterlogging, drought, frost, poor nutrient status, extreme acid or alkalaine soil conditions, insect or nematode damage. Crop injury may occur if the product is applied to these crops. If the crop is stressed after application of the herbicide, crop yellowing and slow growth may occur but the final yield is normally unaffected as the crop will recover. Application to soils with pH 55 or less may result in some crop retardation, especially if the crop is stressed.

 

Sprayer Cleanup

Many plant species are sensitive to low concentrations of Cheminova Metsulfuron 600WG Herbicide. For this reason it is important to thoroughly clean spray tanks after use as small quantities of product remaining in the tank may cause injury to desirable pastures and crops if the tank is used for other spraying procedures. The following method of tank cleanup should be used:

  1. Drain tank and flush tank boom and hoses for at least 10 minutes
  2. Fill the tank with clean water and add 300mL of household bleach (containing 4% chlorine) per 100L water. Flush through the hoses and boom, allow to stand for 15 minutes with agitation system engaged, then drain.
  3. Repeat Step 2
  4. Nozzles and screens should be removed and cleaned separately
  5. Remove traces of chlorine bleach by rinsing the tank thoroughly with clean water and flushing hoses and boom

WARNING: DO NOT use chlorine bleach with ammonia. It is important that liquid fertilisers containing ammonia be rinsed from the application equipment before adding a chlorine bleach solution. If traces of ammonia are present it may react with the chlorine bleach releasing a gas with a musty chlorine odour which may cause eye, nose, throat and lung irritation. DO NOT clean equipment in an enclosed area.

 

Restraints

 

BRUSH APPLICATIONS

  • DO NOT spray if rainfall is expected within 4 hours
  • DO NOT store the prepared spray for more than 2 days
  • DO NOT store tank mixes with other products
  • DO NOT apply to pastures based on paspalum notarum or setaria spp as their vegetative growth will be reduced
  • DO NOT treat newly sown pastures as severe damage may occur
  • DO NOT use on pasture seed crops.

AERIAL APPLICATION BY AIRCRAFT

  • DO NOT apply if rainfall is expected within 2 hours of spraying
  • DO NOT store tank mixes with other products
  • DO NOT store the prepared spray for more than 2 days.

FOR ALL STATES

  • DO NOT apply if rainfall is expected within 6 hours of spraying
  • DO NOT store tank mixes with other products
  • DO NOT store the prepared spray for more than 2 days
  • DO NOT apply to plants wet with dew or rain or if droplets run-off when plants are disturbed

ESTABLISHED PASTURES AND PASTURE RENOVATION

  • DO NOT spray if rainfall is expected within 4 hours
  • DO NOT store the prepared spray for more than 2 days
  • DO NOT store tank mixes with other products
  • DO NOT apply to newly sown pastures as severe damage may result
  • DO NOT use on crops grown for pasture seed
  • DO NOT apply to weeds under stress or that are not actively growing.

APPLICATION IN WINTER CEREAL CROPS

  • DO NOT apply to crops under stress
  • DO NOT spray if rainfall is expeted within 2 hours
  • DO NOT store the prepared spray for more than 2 days
  • DO NOT store tank mixes with other products
  • DO NOT apply to crops before the three leaf stage when used post emergent
  • DO NOT use on flood or furrow irrigated crops.

 

Resistance Warning

 

Cheminova Metsulfuron 600WG Herbicide is a member of the sulfonyl urea group of herbicides. Cheminova Metsulfuron 600WG Herbicide has the ALS inhibitor mode of action. For weed resistance management Cheminova Metsulfuron 600WG Herbicide is a Group B Herbicide.

 

Some naturally occurring weed biotypes resistant to Cheminova Metsulfuron 600WG Herbicide 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 Metsulfuron 600WG Herbicide or any other Group B 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 Metsulfuron 600WG Herbicide to control resistant weeds.

 

Protection of wildlife, fish, crustaceans and environment

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

DO NOT apply to weeds growing in or over water.

DO NOT spray across open bodies of water.

 

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 weather conditions, or from spraying equipment that may cause drift onto nearby susceptible plants/crops, cropping lands or pastures.

 

Safety Directions

 

Will irritate the skin. Avoid contact with the skin. When preparing product for use, wear cotton overalls buttoned to the neck and wrist, a washable hat and elbow length PVC gloves. When using the prepared spray wear cotton overalls buttoned to the neck and wrist and elbow length PVC gloves. Wash hands after use. After each days use, wash gloves and contaminated clothing.

 

Storage

Keep out of reach of children. Store in the closed original container in a cool, well ventilated area. Do not store for prolonged periods in direct sunlight.

 

Disposal

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 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.

 

Product details last updated on 08 Apr 2010

 

DISCLAIMER: This is not the METSULFURON 600 WG HERBICIDE 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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