Bionix C4 Non-Selective All-Natural Herbicide

Bionix C4 Non-Selective All Natural Herbicide contains 400 g/L nonanoic acid present as ammonium nonanoate, delivering fast contact burndown of seedling and young broadleaf and grass weeds across professional sites, including paths, fence lines, fallows, orchards, and vineyards.

Nontox Pty Ltd’s plant-based formula is pH neutral, non-corrosive, and does not translocate or migrate through the soil, making it easy on equipment and safe around sensitive areas when applied as directed. Visible results appear within an hour with full burndown in 24 hours, and it provides an effective alternative mode of action against glyphosate-resistant and paraquat-resistant weed species. For professional use only.

Pack Sizes: 5L, 20L, 1000L. Registrant: Nontox Pty Ltd (APVMA #: 93067/137873)

Click For Technical Info & Tips For Use

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2 or more	$145.00 each	Available
2 or more	$360.00 each	Available

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Description

Bionix C4 Non-Selective All-Natural Herbicide

Bionix C4 is a plant-based, non-selective natural herbicide containing 400 g/L nonanoic acid present as ammonium nonanoate, delivering fast contact burndown of seedling and young broadleaf and grass weeds. Registered by the APVMA (Approval No. 93067/137873) in February 2024, this Nontox Pty Ltd product covers professional use across paths, fence lines, fallows, orchards, and vineyards. Its pH-neutral, soap-salt formulation provides a proven alternative where resistance to glyphosate and paraquat is a growing problem.

Bionix C4 penetrates plant cell walls and causes rapid dehydration and collapse. Because it is a contact-only product and does not translocate, it kills what it touches and does not migrate through the soil. Visible results appear within an hour, and full burndown is complete within 24 hours.

What Situations Is Bionix C4 Registered For?

Situation	Examples
Infrastructure and amenity	Paths, driveways, roadsides, guideposts, powerlines, fence lines, aerodromes
Horticulture	Orchards, vineyards, nursery stock, protected cropping
Agriculture	Fallows
Public and commercial	Industrial areas, public utilities, public service areas
Turf (spot spraying)	Established lawns and turf

Which Weeds Does Bionix C4 Control?

Bionix C4 controls seedling and young annual weeds, including:

Clover, cobbler pegs, couch grass and crowsfoot grass
False heather, fleabane, nutgrass and paspalum
Plantain, slender celery, capeweed and chickweed
Fat hen, lamb’s tongue, peppercress, potato weed and stinking roger

More advanced or established weeds may only be suppressed, so repeat applications are likely needed.

Is Bionix C4 Safe Around Crops?

Yes. Field trials at Piñata Pineapple Farms in Queensland confirmed a high level of crop safety when applied as directed. Bionix C4 also suits use as a harvest defoliant for pumpkins, potatoes, root vegetables, and cotton, where elimination of green leaves, weeds, and grasses is required before harvest.

Does Bionix C4 Work on Glyphosate-Resistant Weeds?

Yes. Bionix C4 offers an alternate mode of action against herbicide-resistant weed species. Comparative trials against Roundup Biactive (360 g/L glyphosate) and Slasher (525 g/L nonanoic acid) confirmed equivalent control on most species, including resistant fleabane in vineyard conditions at Mudgee. Note: not all resistant weed species have been tested.

Frequently asked questions;

Q: Both Bionix C4 and Slasher Organic Weedkiller (Yates) contain nonanoic acid as the active. What makes the Bionix C4 formulation different?

A: The key difference is the salt form. Bionix C4 uses ammonium nonanoate, which is nonanoic acid neutralised with ammonia. This salt form is water-soluble by nature, meaning it mixes readily into aqueous solutions without heavy reliance on added surfactants or organic solvents. Slasher uses free nonanoic acid (525 g/L), which is an oily fatty acid with low water solubility. To make it sprayable, manufacturers must force it into emulsifiable concentrates using high-surfactant approaches. Those added surfactants introduce high acidity, strong odour, corrosivity, and formulation complexity that Bionix C4 avoids entirely.

Q: Bionix C4 is pH neutral. Why does that matter compared to other nonanoic acid herbicides?

A: Free nonanoic acid is inherently acidic and corrosive. Products built on it require pH management and can damage spray equipment over time, particularly seals, pumps, and hoses. Bionix C4’s ammonium nonanoate formulation, combined with selected polar solvents, produces a pH-neutral product. This reduces corrosivity, extends equipment life, and makes the product safer and easier to handle under field conditions. It also lowers the risk of eye and skin irritation relative to concentrated free-acid formulations, which regulatory authorities, including the APVMA, flag as requiring tighter exposure controls.

Q: If the active is essentially the same compound, does Bionix C4 Natural Herbicide actually perform better in the field?

A: Comparable or better, depending on the situation. In Sunshine Coast Council trials, Bionix C4 delivered equivalent control to both Roundup Biactive (360 g/L glyphosate) and Slasher (525 g/L nonanoic acid) across most weed species. The ammonium nonanoate molecule has a split-polarity structure, meaning one end is water-loving, and one end is oil-loving. This causes it to sit at the water-air and water-oil interface, acting as its own surfactant on waxy and oily leaf surfaces. In practice, Bionix C4 self-wets on contact without the need for additional wetter in most situations, while free nonanoic acid products rely more heavily on added surfactants to achieve the same penetration. The result is a simpler, more consistent spray performance with lower acidity and a better handling profile.

Features & Benefits

Plant-derived active constituent: 400 g/L nonanoic acid present as ammonium nonanoate, APVMA registered (93067/137873) in February 2024.
Fast burndown: Visible results within an hour and full weed collapse within 24 hours.
Non-selective contact action: Controls seedling and young broadleaf and grass weeds across a broad range of professional situations.
pH neutral and non-corrosive: Ammonium salt formulation protects spray equipment and is safer to handle than traditional nonanoic acid products.
Does not translocate or migrate: Active stays on treated plant surfaces and does not move through the plant or the soil profile.
Alternate mode of action: Effective on weeds with confirmed resistance to glyphosate and paraquat, supporting resistance management programmes.
Wide registration: Approved for paths, driveways, roadsides, fence lines, fallows, orchards, vineyards, lawns, turf, and amenity areas.
Harvest defoliant potential: Suitable for pre-harvest use on pumpkins, potatoes, root vegetables, and cotton crops.

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Directions Of Use

Click here for Bionix C4 Herbicide directions for use.

Bionix C4 is a non-selective contact herbicide for professional use only. Apply by ground equipment using a boom or spot sprayer with a coarse droplet nozzle. Mix at 7-8.5 L per 100 L water for general and amenity weed control, or 8.5 L per 100 L water for fallows, orchards, and vineyards. Apply at the 4-8 leaf stage when the weed canopy is below 15 cm in height for best results. Ensure complete foliage coverage, as partial coverage produces partial control only. Do not spray weeds that are wet, and do not apply if rainfall is expected before spray deposits dry.

General Application Rates:

Situations:

Paths, driveways, around sheds, gardens, amenity horticulture areas, protected cropping situations, and around nursery stock.
Spot spraying in lawns and turf.
Commercial and industrial areas, domestic and public service areas, rights of way, including roadsides, guideposts, powerlines and substations, aerodromes, public utilities and fence lines.

Weeds:

Seedling and young annual and perennial weeds and grasses, including Clover, cobbler pegs, couch grass, crowsfoot, false heather, fleabane, nutgrass, paspalum, plantain, and slender celery.
More advanced or established weeds may only be suppressed and require repeated application.

Rate:

7 – 8.5 L/100 L water (70 – 85mL/L)

Critical Comments:

Spray over all weed foliage to ensure full foliage penetration and coverage.
Partial penetration of the vegetation canopy or partial coverage will result in poorer control.
Use the higher rate in denser weed vegetation.
To assist in site preparation, apply at the early vegetative stage of weeds.
Best results are obtained at the 4- 8 leaf stage when the weed canopy is less than 15 cm in height. For established larger weeds use the higher rate and a follow up application may be required.
Repeat spray after 7-10 days if required.
For hard-to-wet weeds, use a suitable wetting agent.

Situation:

Fallows, orchards & vineyards.

Weeds:

Seedling and young annual and perennial weeds and grasses, including Clover, cobbler pegs, couch grass, crowsfoot, false heather, fleabane, nutgrass, paspalum, plantain, and slender celery.
More advanced or established weeds may only be suppressed and require repeated application.

Rate:

8.5 L/100 L water

Critical Comments:

Apply as a band spray 400 mm wide on each side of the orchard or vine crop row.
Apply at the early vegetative stage of weeds.
Best results are obtained at 4-8 leaf stage when weed canopy is less than 15 cm in height.
Established weeds may require more than one application.
Repeat spray after 14 days if required.
Spray over all weed foliage to ensure full foliage penetration and coverage.
Partial foliage penetration or coverage will result in partial control.
For fallows apply in the water volume of 600 L/ha

Rates are a general guide only. Before opening, carefully read Bionix C4 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 and dangerous, and render the product ineffective.

Questions and answers from customers

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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
Amenity Areas, Horticulture Areas, Commercial And Industrial Areas, Domestic And/Or Public Area, Driveway, Fallow Land, Garden, Nursery Stock - Protective Crop, Orchard - Established, Path, Public Service Area, Rights Of Way - General, Shed - Around, Spot Spraying In Lawns & Turf And Vineyard - Established	Clover, Cobblers Pegs, Couch Grass, Crowsfoot Grass - Pre-Emergent Control, False Heather, Fleabane, Nutgrass, Paspalum, Plantain, Slender Celery

Tips For Use

Restraints:

Do not spray if weeds are wet.
Do not apply if rainfall is expected before spray deposits dry on plant surfaces.
Do not water treated areas for 24 hours to achieve maximum results.
Do not apply if heavy rains or storms causing soil runoff are forecast within 3 days of application.
Do not irrigate to the point of runoff for at least 3 days after application.
Do not allow spray to contact or drift onto plants you do not wish to kill.
For professional use only. Not for use by domestic users.

Spray Drift Restraints:

Do not apply unless the wind speed is between 3 and 20 km/h at the application site.
Do not apply under hazardous surface temperature inversion conditions, which typically exist one to two hours before sunset and persist until one to two hours after sunrise.
Do not allow bystanders to come into contact with the spray cloud.

Mixing Instructions:

Half fill the spray tank and commence agitation.
Slowly add the required amount of Bionix C4.
Top up with the required quantity of water and agitate well before spraying.
Do not mix more than is needed.

Application:

Apply by ground equipment only using a boom or spot sprayer.
Apply using a coarse droplet spray to ensure complete foliage coverage.
Bionix C4 is a contact spray only. Partial coverage produces partial control.
Do not spray porous surfaces without prior testing. May cause discolouration on porous hard surfaces.

Re-Entry Period:

Do not enter treated areas until the spray has dried, unless wearing cotton overalls buttoned to the neck and wrist (or equivalent clothing) and chemical-resistant gloves. Wash clothing after each day’s use.

Protection of Crops, Native and Other Non-Target Plants:

Do not apply under weather conditions or from equipment that may cause spray to drift onto nearby susceptible plants, crops, cropping lands, or pastures.

Protection of Wildlife, Fish, Crustaceans and the Environment:

Do not contaminate wetlands or watercourses with this product or used containers.
Not compatible with integrated pest management (IPM) programmes utilising beneficial arthropods. Minimise spray drift to reduce harmful effects on beneficial arthropods in non-crop areas.

Storage:

Store in the closed, original container in a cool, well-ventilated area.
Do not store for prolonged periods in direct sunlight.
Triple rinse containers before disposal, and add rinsings to the spray tank.
Do not dispose of undiluted chemicals on site.

Safety Directions:

Will irritate the eyes and skin. Avoid contact with eyes and skin.
When opening the container, preparing the spray, and applying, wear cotton overalls buttoned to the neck and wrist (or equivalent clothing), elbow-length chemical-resistant gloves, and a face shield or goggles.
Wash your 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 the Poisons Information Centre. Phone Australia 131 126.

This information and product advice are not intended as 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.