Numchuk Quad Herbicide 20L | 4-Way Total Weed Control

Product Description

NUMCHUK QUAD (ProForce Numchuk Quad Herbicide) contains 350 g/L terbuthylazine, 100 g/L glyphosate (as the isopropylamine salt), 60 g/L amitrole and 15 g/L oxyfluorfen, sold in 1L and 20L packs. The label copy we read lists fencelines, roadsides, railway lines and commercial and industrial areas, including building lines, rights of way, powerlines and substations, aerodromes and public utilities. Domestic gardens and lawns are not mentioned. The label says it provides knockdown control and residual control of most annual, perennial and broadleaf weeds for 8 to 12 months, depending on soil type and rainfall. Signal word: POISON.

It will damage plants you want to keep, and it stays in the soil. The label says not to apply if sensitive crops, gardens, landscaping vegetation, protected native vegetation or protected animal habitat are within 25 metres downwind of the area. Do not apply to waterlogged soil, and do not apply if heavy rain or storms likely to cause run-off are forecast within 3 days. Heavy rain on light soils can move the product out of the weed seed zone and reduce control.

How to use it. See the Application Rates tab and our mixing rates guide. Do not spray with droplets smaller than a COARSE spray droplet size category, do not spray when the wind is under 3 or over 20 km/h, and do not spray during surface temperature inversion conditions. The label requires an accurate written record of each spray application. It says 20 to 30 mm of rain within 2 to 3 weeks is needed to wet the soil through the weed root zone.

Before you buy. The label says it is very toxic to aquatic life: do not contaminate wetlands or watercourses, and do not apply if aquatic or wetland areas, including ponds, streams and rivers, are within 50 metres downwind. When opening the container and preparing the spray, wear cotton overalls buttoned to the neck and wrist, elbow-length chemical-resistant gloves and a half face-piece respirator. Do not enter treated areas until the spray has dried unless wearing protective clothing. Poisons Information Centre: 13 11 26.

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

Additional information

Weight	25 kg
Dimensions	43 × 29 × 22 cm
Size	20L

Safety Data Sheets (SDS)

Application Rates

Where to Use:
Fencelines, Roadsides, and Railway Lines:
Controls most annual, perennial, and broadleaf weeds.

Application Rate:
Boom Sprayer (including ATV): Use 20 Litres per Hectare.

Important Tips:

Provides knockdown and long-lasting control (8-12 months) of weeds.
Spray evenly to cover the area.
Apply in spring or autumn when weeds are actively growing, and the soil is moist.
Avoid spraying during drought.
For better results, mix with 120 mL/100 L of tallow amine ethoxylate surfactant or a similar wetting agent.
Ensure 20-30 mm rainfall within 2-3 weeks to activate the product.

Where to Use:
Commercial & Industrial Areas (e.g., building lines, roadsides, powerlines, aerodromes, public utilities, and fencelines).

Application Rate:

High-pressure spraying (Handgun): Mix 1.8 L per 100 L water. Use 1100 L spray per hectare.
Low-pressure spraying (Handgun): Mix 180 mL per 10 L water.

Important Tips:

Spray evenly for full coverage.
Apply in spring or autumn when weeds are actively growing, and soil is moist.
Do not apply in drought conditions.
Add 120 mL/100 L of tallow amine ethoxylate surfactant or another suitable wetting agent for better results.

Follow all label instructions for safe and effective use. Always read the full product label for safety, storage, and first-aid details before using. Misuse can be unsafe, illegal, and reduce product effectiveness.

Tips for use

Important Restrictions:

Do not apply by aircraft.
Avoid application on waterlogged soil or if heavy rain is expected within 3 days.

Spraying Guidelines:

Use coarse or larger spray droplets as per label instructions.
Only spray when wind speed is between 3–20 km/h.
Avoid spraying during temperature inversions (when cool air is trapped under warm air).

Record Keeping:

Write down spray details within 24 hours and keep records for 2 years. Include:
- Date, time, and location.
- Product name and quantity used per hectare.
- Crop type, weeds/pests targeted, weather conditions, and spray equipment details.

No-Spray Zones:
Stay 25m away from sensitive crops, gardens, or habitats.
Keep 50m away from aquatic areas like rivers or ponds.

General Instructions:
Numchuk Quad Herbicide provides 8-12 months of weed control, killing both standing weeds and new seedlings.
Works through leaves and roots; rain or irrigation (20-30mm) within 2-3 weeks is essential for best results.
Avoid applying in very light soils or before heavy rains to prevent reduced weed control.

Mixing:
Mix away from water sources (at least 20m).
Fill the spray tank partially with water, add the product, and stir continuously.

Application Tips:
Hand Gun: Use 1100L per hectare.
Boom Spray: Apply at least 100L per hectare. Ensure even coverage and avoid drift.

Safety Precautions:
Do not enter treated areas until the spray has dried.
Wear protective clothing and gloves; launder clothing daily.
Avoid contamination of water bodies or wildlife areas.

Storage:
Store in the original container, in a cool, dry, ventilated area. Avoid direct sunlight.

First Aid:
If poisoning occurs, call a doctor or Poisons Information Centre at 131 126 (Australia). Refer to the Safety Data Sheet (SDS) for detailed information.

Active Ingredients

350 g/L TERBUTHYLAZINE, 100 g/L GLYPHOSATE PRESENT AS THE ISOPROPYLAMINE SALT, 60 g/L AMITROLE, 15 g/L OXYFLUORFEN

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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.

NUMCHUK QUAD Herbicide 20L – Comprehensive Weed Control for Gardens and Farms

Related Products

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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NUMCHUK QUAD Herbicide 20L – Comprehensive Weed Control for Gardens and Farms

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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

BUFFALO Herbicide 5L – Dual-Action Weed Control for Lush Gardens

FUSILADE FORTE 128EC Herbicide 5L – Fast Weed Control for Gardens & Farms

Glufosinate 200g/L Weedkiller 20L – Gamma Non-Selective, SureFire

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

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