SureFire WeedPro 540 Glyphosate Herbicide 20L

Product Description

WEEDPRO 540 (Surefire WeedPro 540 Bio Herbicide) is a non-selective herbicide containing 540 g/L glyphosate (as the isopropylamine salt), sold in 1L, 5L and 20L packs. The label lists weed control in domestic areas, commercial and industrial areas, public service areas and rights of way, agricultural areas, forestry, horticultural crops, pasture and aquatic areas (fresh and brackish water). Signal word: CAUTION.

It will damage plants you want to keep. The label says this product is non-selective and may severely injure or kill desirable plants if it contacts their foliage, green stems or fruit. Do not spray in conditions that could cause spray to drift onto nearby susceptible plants, adjacent crops or pastures, and do not spray if rain is expected. Do not apply near trees or vines less than 3 years old unless they are protected from spray and spray drift.

How to use it. See the Application Rates tab and our mixing rates guide. The label says effects are usually apparent in 3 to 7 days on annual weeds and up to 14 to 21 days on perennial weeds. Heavy rain within 1 hour of treatment that causes run-off may wash the product off the leaves and retreatment may be necessary. Do not disturb treated weeds by grazing, cultivation or sowing for 1 day after treating annual weeds or 7 days after treating perennial weeds. Do not treat weeds that are stressed by frost, cold, disease, waterlogging, lack of moisture or insect damage. Do not store mixed spray for more than 2 days.

Before you buy. Store, mix and apply only in plastic or plastic-lined stainless steel, aluminium, copper, brass or fibreglass containers: in unlined steel or galvanised containers a highly flammable gas may form. Do not contaminate dams, rivers or watercourses with the undiluted product or used containers. When preparing the product wear elbow-length PVC gloves and a face shield or goggles. The label gives no withholding period when used as directed. Poisons Information Centre: 13 11 26.

Delivery from $17, priced by weight and postcode at checkout.

Additional information

Weight	25 kg
Dimensions	39 × 29 × 29 cm
Size	20L

Safety Data Sheets (SDS)

Download SDS

Application Rates

General Mixing Rate:

Mix 7 mL per litre of water.
Purpose:
Controls grasses, broadleaf, and aquatic weeds.

Application Instructions:

Apply when weeds are actively growing.
Ensure complete and even coverage of weed foliage.
Visible results may appear in 3 to 7 days.

Application Rates:

For Annual Weeds:

Boom Sprayer: 1.35–2 L per hectare
Handgun Sprayer: 330–480 mL per 100L water
Knapsack Sprayer: 50–70 mL per 15L water (4–5 mL per 1L water)

For Perennial Weeds:

Boom Sprayer: 2–4 L per hectare
Handgun Sprayer: 470–660 mL per 100L water
Knapsack Sprayer: 70–100 mL per 15L water (5–7 mL per 1L water)

For Aquatic Weeds:

Boom Sprayer: 1.3–6 L per hectare
Handgun Sprayer: 330–860 mL per 100L water
Knapsack Sprayer: 50–130 mL per 15L water (5–7 mL per 1L water)

Important Notes:

Always read and follow the product label for detailed usage directions, safety information, and first aid.

Use only as directed to avoid legal or safety risks and to ensure effectiveness.

Tips for use

WeedPro 540 Herbicide is a non-selective, water-soluble weed killer designed to control grasses and broadleaf weeds in various agricultural and non-agricultural settings. It’s suitable for use before planting crops, except for transplanting tomato seedlings.

Key Usage Notes:

Before Planting Crops: Safe for use on agricultural land before sowing any crop. Avoid using it before transplanting tomato seedlings.
Plastic Mulch: If crops will be transplanted into plastic mulch, ensure no residue remains on the plastic by rinsing with 2 cm of rainfall or sprinkler irrigation.
How It Works: The herbicide is absorbed through leaves and stems, moving to the roots. It does not remain active in the soil or control weeds after application. Visible effects take 3–7 days, or up to 2–3 weeks in cool or cloudy weather.

Improving Effectiveness:

Add a high-quality non-ionic surfactant to improve results, especially when using low rates or high water volumes.

Recommended Rates:

200 mL/100 L (1000 g/L surfactant)
250–500 mL/100 L (700 g/L surfactant)
For aquatic weeds, use surfactants approved for water use (e.g., Nemo Aquatic Surfactant).
Avoid adding oils or other chemicals unless specified on the label.

Mixing Instructions:

Fill the spray tank 1/3 to ½ full with clean water and start agitation.
If using ammonium sulphate, mix it first (800 g/100 L spray solution).
Add other herbicides or additives, then WeedPro 540, and mix well.
Add the remaining water and any required surfactant to minimize foaming.
Agitate the solution during application and use it promptly.
Clean all equipment thoroughly after use with clean water.

First Aid:

If exposed, contact a doctor or Poisons Information Centre immediately (Australia: 131 126).
Refer to the Safety Data Sheet (SDS) for detailed safety information.

Active Ingredients

540 g/L GLYPHOSATE (present as the isopropylamine salt

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Frequently asked questions

What is the difference between a selective and a non-selective herbicide?

A selective herbicide kills target weeds while leaving desirable plants unharmed - for example, a lawn-safe product that removes bindii and clover from buffalo or couch without damaging the turf. A non-selective herbicide such as glyphosate kills almost any green plant it contacts, so it is used for driveways, fence lines, garden-bed prep and total vegetation control, never on lawns.

What is a pre-emergent herbicide and when do I apply it?

A pre-emergent creates a barrier in the top layer of soil that stops weed seeds from establishing as they germinate. It does not control weeds that are already growing. Apply it before the target weed germinates - late summer to early autumn for winter grass, and early spring for summer grasses like crabgrass and crowsfoot - then water it in.

Will herbicide damage my lawn?

Only if you use the wrong type. Non-selective herbicides (glyphosate) will kill or badly damage turf. Selective lawn herbicides are formulated to be safe on common Australian turf at label rates, but tolerance varies by grass - buffalo is the most sensitive - so always check the label lists your turf type before spraying.

Glyphosate 540 Weedkiller 20L – WeedPro 540g/L Non-Selective

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Product Description

Additional information

Safety Data Sheets (SDS)

Application Rates

Tips for use

Active Ingredients

Reviews

Frequently asked questions

What is the difference between a selective and a non-selective herbicide?

What is a pre-emergent herbicide and when do I apply it?

Will herbicide damage my lawn?

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Glyphosate 540 Weedkiller 20L – WeedPro 540g/L Non-Selective

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Product Description

Additional information

Safety Data Sheets (SDS)

Application Rates

Tips for use

Active Ingredients

Reviews

Frequently asked questions

What is the difference between a selective and a non-selective herbicide?

What is a pre-emergent herbicide and when do I apply it?

Will herbicide damage my lawn?

You May Also Like

Barricade Pre Emergent 1LTR

EXONERATE Herbicide 5L

FIREBALL 400 Herbicide 20L

STARANE ADVANCED Herbicide 20L

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