Metric Herbicide

Metric Herbicide is for the selective post-emergent control of Crowsfoot Grass, Winter Grass and Summer Grass in certain turf species.  

Metric Herbicide is a unique selective turfgrass herbicide containing 400g/L of the active ingredient Metribuzin.  It is the first Metribuzin-based herbicide in Australia to be registered for the control of crowsfoot grass in common couch grass turf and is labelled for use in Qld, WA, NT and the ‘Northern Rivers region of NSW only. 

Active Ingredient: Metribuzin @ 400g/L

Click For Technical Info & Tips For Use
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This item is large and requires a courier! Ensure a courier can reach your address.
Don’t worry, shipping is STILL FREE!
Click here for shipping info or give us a call.

Ordering multiple large items? They will be shipped on a skid or pallet to ensure that your items arrive safely and securely. The delivery truck will need to be unloaded with a forklift. If you do not have a forklift, please provide an address where a forklift is present.

Metric Herbicide METRIC Amgrow

Description

Metric Herbicide

Active Ingredient: Metribuzin @ 400g/L

Metric Herbicide is for the selective post-emergent control of Crowsfoot Grass, Winter Grass and Summer Grass in certain turf species.  

Metric is a unique selective turfgrass herbicide containing 400g/L of the active ingredient Metribuzin. It is the first Metribuzin-based herbicide in Australia to be registered for the control of crowsfoot grass in common couch grass turf and is labelled for use in Qld, WA, NT and the ‘Northern Rivers region of NSW only. 

Metric is a selective post-emergent herbicide for application after the emergence of weeds, for the control of certain weeds in established turf.  Metric is absorbed by roots, shoots and leaves of weeds.

What established turf species can Metric Herbicide be used on;

  • Green Couch
  • Empire Zoysia
  • Queensland Blue Couch
  • Sir Walter Buffalo

Do not use on Chewing’s Fescue or Ryegrass (annual or perennial).

Varietal differences in certain Couch & Hybrid Couch grasses may produce more pronounced effects and it is recommended that small areas be tested for turf safety before largescale application occurs. Avoid exceeding application rates through overlapping sprayed areas

What weeds does Metric Herbicide target;

  • Crowsfoot grass (Eleusine indica)
  • Winter grass (Poa Annua)
  • Summer grass (Crabgrass) (Digitaria ciliaris)

The degree of control resulting from the application of Metric is primarily dependent upon weed species, weed size at application, environmental conditions, amount of Metric applied and growing conditions. Weed control is improved when ample soil moisture exists, and weeds are actively growing, rather than when the soil is dry and weeds are under stress from the lack of moisture.  As with most herbicides, Metric will perform best on younger, actively growing weeds. Adequate soil moisture has been shown to play a role in achieving good control of target weeds

What is the Turf Tolerance with Metric Herbicide;

Following an application of Metric slight discolouration of the couch turf surface may be observed.  At the label rate of 1L/Ha, any discolouration that may be observed will peak around one week after application and begin fading to disappear by three weeks after application. If the label rate is exceeded a greater level of discolouration can be expected. 

Why choose Metric Herbicide;

  • Contains the active ingredient Metribuzin.
  • Exceptional performance in crowsfoot control.
  • First Australian turf-registered metribuzin based herbicide.
  • Superior control of large ‘difficult to kill’ crowsfoot plants.
  • Low active ingredient output due to low use rate.
  • Easy to use liquid formulation.
  • Unique mode of action for crowsfoot control, ideal for combating resistance.

Pack Size: 1-Litre

Registrant: Amgrow Pty Ltd (APVMA #: 68564)

Turf Herbicide Range

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What others are saying

  1. robert.cameron

    Crowsfoot largely eliminated from lawn

    robert.cameron

    A season on from the first use of Metric and the crowsfoot problem I had has largely gone. I did have some initial collateral damage to the lawn at first but then landed on the mixing ratio of 1:800 when used in a backpack sprayer.

    This year I’m just doing a little follow-up spot spraying and enjoying a much healthier lawn.

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  2. Kevin Stone

    Metric

    Kevin Stone (verified owner)

    Product arrived promptly and in perfect condition from the shipping process

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  3. John Kent

    Spot spraying at 100th ratio

    John Kent (verified owner)

    This is good advice for the kikuyu, but is 50% effective on crows foot. Next spray I will use 50th ratio. My observation was 5 weeks after spot spraying of crows foot.
    22/3/2022 Spot sprayed using 100th ratio on crows foot.
    25/4/2022 Half of crows foot died. The other half, the grass polls are 90% dead but have sent out new growth. Conclusion is mixture must be stronger, next time try 50%. No kikuyu was damaged which is good advice for Specialist Sales.

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  4. Rob Elliot

    Rob Elliot

    Product seems to be working well as per manufactures advice. Would like to see instructions for small lawns and spot spraying ( the rate per say 5 litres)
    Service excellent

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    • One person found this helpful
      specialistsales

      specialistsales

      Hi Rob. Metric Herbicide is designed to be applied by boom spray application, hence the per hectare rate. There is a ‘rough’ conversion you can use to convert it to a knapsack. Add 1/100th of rate on weed table to 10L of water. Each 10L of mix will cover 100m2 (1/100th ha). eg. If the rate in the weed table is 1L use 10mLmetric/10Lwater/100m2.

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  5. Robert

    Very effective but needs more info for hand spraying

    Robert (verified owner)

    This is extremely effective at knocking out Crowsfoot in lawns. The only problem is the directions only cover broad acre application so mixing ratios if using a backpack sprayer are a little hit and miss. Next time I’ll try 20ml per 10 litres of water as the first time it knocked out the turf too.

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    • One person found this helpful
      specialistsales

      specialistsales

      Hi Robert. Many of the specific turf herbicides are recommended to be applied via boom spray application to ensure even coverage of chemicals over a specific area. Even slight overdosing can see the damage of non-target species (ie turf) which is why spot spraying is not recommended. There is a simple conversion rate that can be applied from Boomspray to knapsack applications. Add 1/100th of rate on weed table to 10L of water. Each 10L of mix will cover 100m2 (1/100th ha). eg. If the rate in the weed table is 1L use 10mL/10L/100sqm water.

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Features & Benefits

  • Contains the active ingredient Metribuzin.
  • Exceptional performance in crowsfoot control.
  • First Australian turf-registered metribuzin based herbicide.
  • Superior control of large ‘difficult to kill’ crowsfoot plants.
  • Low active ingredient output due to low use rate.
  • Easy to use liquid formulation.
  • Unique mode of action for crowsfoot control, ideal for combating resistance.

Directions Of Use

Turf: Couch, Empire Zoysia, Queensland Blue Couch, Sir Walter Buffalo (do not use on Chewing’s Fescue, Rye (annual or perennial).

Weeds: Crowsfoot grass (Eleusine indica), Winter grass (Poa Annua) & Summer grass(Crabgrass) (Digitaria ciliaris)

Rate: 1-1.5L per Hectare

Critical Comments: 

  • For all applications, the best results will be obtained when applying with a minimum water volume of 400 – 800 L/ha (4L – 8L per 100sqm).
  • Seedling Weeds – Apply to actively growing weeds at the 2 – 4 leaf stage for optimum control.
  • Tillered Weeds – Apply to actively growing weeds having up to 4 tillers but before seed set.
  • Allow at least 8 weeks between last application and over-seeding with cool-season grasses for winter cover.
  • Transient discolouration may occur. Varietal differences in certain Couch, Hybrid Couch grasses & Sir Walter Buffalo may produce more pronounced effects and it is recommended that small areas be tested for turf safety before large-scale application occurs.
  • Avoid exceeding application rates through overlapping sprayed areas.
  • Apply the higher rate where weed infestations are greater.

Conversion rates from Boomspray to knapsack applications.

  • Add 1/100th of rate on weed table to 10L of water.  Each 10L of mix will cover 100m2
  • (1/100th ha). eg. If the rate in the weed table is 1L use 10mL/10L water.

Rates are a general guide only.  Before opening, carefully read Metric Herbicide directions for use, precautionary and protection statements, storage and disposal, safety directions and first aid instructions.  The product is designed for the particular purpose indicated on the label. Failure to use the product strictly as directed may be illegal, dangerous and render the product ineffective.

Questions and answers from customers

    How long does Metric Herbicide take to work after application?

  1. Q How long does Metric Herbicide take to work after application?
    Asked by Joihn Pender on February 19, 2024 7:26 am
    Answered by the admin

    After applying Metric Herbicide, it may take 3-5 days to start seeing results. Weed control is improved when ample soil moisture exists, weeds are actively growing rather than when the soil is dry, and weeds are under stress from the lack of moisture. Metric Herbicide should not be applied to turf that is stressed by any cause (such as severe weather conditions,
    waterlogging, drought, excessive soil acidity or alkalinity, poor nutrient status, disease, nematode or insect damage) as crop injury and poor weed control may result.

  2. I believe goosegrass is slightly different to crab grass. However, does this herbicide work on goosegrass?

  3. Q I believe goosegrass is slightly different to crab grass. However, does this herbicide work on go...... Read more
    Asked by Tammy on February 5, 2024 11:44 pm
    Answered by the admin

    Goose Grass (Eleusine tristachya species) is a common name for many similar-looking grasses. Crabgrass (Digitaria sanguinalis) is often confused with goose grass. However, they are different grasses. Metric Herbicide is not registered to control goose grass, however as it will target Crowsfoot grass (Eleusine indica) which is closely related to goose grass, it may be effective. As no data is available, an off-label trial is the only way to test.

  4. Is Metric Herbicide a liquid or granular form?

  5. Q Is Metric Herbicide a liquid or granular form?
    Asked by peter on September 23, 2023 12:44 pm
    Answered by the admin

    Metric Herbicide is a liquid concentrate formulation.  Always read the 'directions for use' label carefully to ensure suitability to your situation.  The 'directions for use' can be found on the Metric Herbicide product screen by scrolling down to the heading 'SDS & Technical' and selecting.  A PDF will become available to either download or print.

  6. Can Metric Herbicide be mixed in with other lawn herbicides e.g. Bow & Arrow?

  7. Q Can Metric Herbicide be mixed in with other lawn herbicides e.g. Bow & Arrow?
    Asked by peter.o.hamill on October 31, 2022 5:28 pm
    Answered by the admin

    No information on the Metric Herbicide or Bow & Arrow label indicates physical compatibility with other products.  A small-scale' jar test' is recommended before mixing more significant quantities if you intend to mix Metric Herbicide with other products in a tank mix.  This testing should consist of assessing both uniformed mixtures (i.e. no separation) and no rapid sediment build-up (i.e. no flocculation).

  8. How much Metric Herbicide would you mix in 5 litres of water?

  9. Q How much Metric Herbicide would you mix in 5 litres of water?
    Asked by Phil McManus on May 29, 2022 5:12 pm
    Answered by the admin

    A 'rough' conversion from boom spray Ha rates to Knapsack is to add 1/100th of the rate on the weed table to 10L of water. Each 10L of mix will cover 100m2. So if the rate for Couch on the Metric Herbicide label is 1L/Ha, use 10mL/10L water (0.01 x 1000mL = 10mL).

  10. Can Metric Herbicide be used on Queensland Blue Couch or Zoysia turf species?

  11. Q Can Metric Herbicide be used on Queensland Blue Couch or Zoysia turf species?
    Asked by RIchard Hetz on January 30, 2022 5:33 pm
    Answered by the admin

    Metric Herbicide is safe to use on Zoysia, Queensland Blue Couch, Green Couch & Sir Walter Buffalo turf varieties when applied as per the directions for use.

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Disclaimer: This information and product advice is not intended to be advice or recommendations for any specific use or circumstance. You should seek specialist advice before using any product. Always follow the manufacturer’s guidelines. Specialist Sales liability is limited.

Host & Pest

Host Pest
Host & Pest
Buffalo Grass, Couch - Established, Queensland Blue Couch & Zoysia Grass Turf - Established Turf Crowsfoot Grass, Summer Grass (Crab Grass), Winter Grass

Tips For Use

Restraints:

  • Do not apply to turf that is stressed by any cause (such as severe weather conditions, waterlogging, drought, excessive soil acidity or alkalinity, poor nutrient status, disease, nematode or insect damage) as crop injury may result.
  • Do not store a suspension of metric herbicide for more than two days, otherwise, a significant breakdown may occur.
  • Do not store tank mixes of metric herbicide.
  • Do not apply to the foliage of desirable plants.
  • Do not use near newly planted shrubs, young ornamental and species with shallow surface roots.
  • Do not apply if heavy rain or storms are likely to cause runoff is forecast.
  • Do not irrigate to the point of runoff for at least 2 days after application.
  • Do not apply by air or through any type of irrigation equipment.
  • Do not apply when turf or weeds are not actively growing.
  • Do not apply where winter grass, ryegrass, crabgrass or bentgrasses are desired species.
  • Do not use it on golf or bowling greens.
  • Do not apply to newly seeded, sodded or sprigged turf.
  • Delay application until turf is at 100% cover and the root system is developed beyond 15 cm depth.
  • Do not apply within 10 metres of desired cool-season grass varieties (i.e. Bent/winter grass greens).

Mixing:

  • Add the required quantity of Metric Herbicide to the partly filled spray tank while agitating.
  • Fill the tank and agitate to ensure thorough mixing. 
  • Continue agitation while spraying. 
  • Reseal partly used container immediately.

Application:

Ground Application:

  • Spray nozzles should be uniformly spaced and of the same size and should provide an accurate and uniform application. 
  • Use spray nozzles that produce a medium spray quality. 
  • To ensure accuracy, calibrate the sprayer before use and calibrate frequently.
  • Apply at a volume of 400 to 800 L of water per hectare (4-8L per 100m2). 
  • Higher volumes should be used for severe weed infestations to ensure adequate spray coverage.
  • Good weed coverage with the spray is essential for optimum weed control. 
  • Observe sprayer nozzles frequently during the spraying operation to ensure that the spray pattern is uniform. 
  • Avoid overlapping of spray runs. 
  • Avoid application under conditions when uniform coverage cannot be obtained or when spray drift may occur.
  • Do not apply aerially or through any type of irrigation system or equipment.
  • When spraying avoid overlapping and shut off spray booms while starting, turning slowly and when stopped. 
  • Neglecting these procedures will cause higher rates of application resulting in turf damage. 
  • Delay spraying if heavy rain is expected within a few hours.

Frequency of application: 

  • Apply no more than 2 applications of this product over a 12-month period.

Precautions: Re-Entry Or Re-Handling:

  • Do not allow entry into treated areas until the spray has dried for low exposure activities (such as irrigation and mowing), unless wearing cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical resistant gloves. 
  • Clothing must be laundered after each day’s use. 
  • Do not allow entry into treated areas for 6 days for high exposure activity (such as hand transplanting) unless wearing cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical resistant gloves. 
  • Clothing must be laundered after each day’s use.

Protection Of Wildlife, Fish, Crustaceans And Environment:

  • Dangerous to aquatic organisms. 
  • Do not contaminate streams, rivers or watercourses with chemical or used containers.

Storage:

  • Store in the closed, original container in a well-ventilated area as cool as possible. 
  • Do not store for prolonged periods in direct sunlight.

Safety Directions:

  • Harmful if swallowed. 
  • May irritate the eyes. 
  • Repeated exposure may cause allergic disorders. 
  • Avoid contact with eyes. 
  • When opening the container, mixing and loading and preparing spray and using the prepared spray, wear cotton overalls buttoned to the neck and wrist (or equivalent clothing) and elbow-length chemical resistant gloves and face shield or goggles. 
  • Wash hands after use. 
  • After each day’s use wash gloves, face shield or goggles and contaminated clothing.

First Aid:

  • If poisoning occurs contact a doctor or Poisons Information Centre. Phone Australia 131 126.
  • For further information, refer to the Safety Data Sheet (SDS).

Withholding Period

Withholding Period Details: (WHP)

  • Do not graze treat ed turf/lawn or feed turf/grass clippings from any treated area to poultry or livestock.

SDS & Technical

Metric Herbicide Label Download Pdf
Metric Herbicide Label (APVMA) Download Pdf
Metric Herbicide SDS Download Pdf
Metric Herbicide TechSheet Download Pdf

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