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Three activators, built on the same living science

Every SOBAC product carries the same Marcel Mézy biology and 30+ years of research. The difference is where, and how, you put it to work.

Applying Bacteriosol with a fertiliser spreader
Soil activator · Pellets · 600kg bag

Bacteriosol

A revolutionary soil micro-biological activator. Loaded straight into your fertiliser spreader, it accelerates humus formation and recycles unabsorbed minerals already present in your ground.

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Compost and manure treated with Bacteriolit
Manure activator · Powder · 500kg bag

Bacteriolit

Transforms manure, slurry, green waste and digestate into a nutrient-rich, eco-friendly soil enhancer, more nutrients per tonne, less crusting and far better nitrogen management.

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Quaterna Sol applied with a self-propelled sprayer
New · Sprayable soil activator

Quaterna Sol

The same living SOBAC biology as Bacteriosol, now in a sprayable form. Goes on through your existing sprayer for even coverage, built for arable farmers who already live on the sprayer.

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How both products work

Activity across three soil zones

SOBAC microbes don't feed the plant directly, they restart the cycles that feed the plant for you.

Autotrophic zone

Drives nutrient cycling, capturing and recycling mineral elements already present in the soil so less needs to be bought in.

Humic zone

Accelerates humus formation, boosting organic matter, structure and the soil's ability to hold water and resist erosion.

Rhizospheric zone

Improves the root environment, encouraging deeper, healthier root systems and stronger nutrient uptake.

Not sure which?

A quick way to choose

Start with Bacteriosol if…

  • You want to build the soil directly across arable or grassland
  • You already run a fertiliser spreader
  • Your goal is to cut bought-in N, P, K and lime

Start with Bacteriolit if…

  • You produce manure, slurry, green waste or digestate
  • You want more nutrient value per tonne of muck
  • Crusting, odour or nitrogen loss is costing you

Most farms end up using both, Bacteriosol on the land, Bacteriolit on the muck. We'll calculate the right quantities for your acreage.

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Applying Bacteriosol with a fertiliser spreader, tap to see the product Tap to see the product
600kgbag · ~28,000 DNA strains
Soil micro-biological activator

Thirty years of research, in a pellet

Bacteriosol is a revolutionary soil micro-biological activator developed through over 30 years of dedicated research focused on regenerating humus and enhancing soil fertility. It's a 100% natural, UAB organic-certified biological soil inoculant by Marcel Mézy Technologies.

It works by recycling unabsorbed mineral elements already present in your ground and rapidly accelerating humus formation, operating across the autotrophic, humic and rhizospheric zones of your soil for holistic, lasting improvement.

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What it does for your soil

Healthier ground, better crops

Optimised fertilisation

Makes existing nutrients available, optimising fertilisation efficiency and reducing what you buy in.

Drought & disease resistance

Stronger, more resilient crops that better withstand dry spells and disease pressure.

Deeper root systems

Encourages roots to drive deeper, reaching moisture and nutrients further down the profile.

More aerated soil

Improves structure and aeration, reducing erosion and naturally balancing soil pH.

Better nutritional quality

Enhances the nutritional quality of the crop you harvest, not just the tonnage.

Naturally balanced pH

A living soil self-regulates, reducing the need for corrective lime over time.

Application

As easy as a normal fertiliser pass

No new kit, no specialist contractor.

Load your spreader

Simply load Bacteriosol into your regular fertiliser spreader, the pellets flow just like conventional product.

Spread at the recommended rate

A typical rate is around 100kg per hectare, a single 24-tonne load covers roughly 240 hectares. We tailor the exact rate to your soil and cropping.

Let the biology build

The microbial blend activates and works through the season, with cumulative gains year on year.

Manure and compost treated with Bacteriolit, tap to see the product Tap to see the product
500kgbag · 28,000+ DNA strains
Manure & slurry activator

Make every tonne of muck work harder

Bacteriolit is a groundbreaking solution that transforms manure into a nutrient-rich, eco-friendly soil enhancer.

Representing over 30 years of meticulous research in soil fertility and humus regeneration, it breaks organic matter down into soil-absorbable forms and works across the autotrophic, humic and rhizospheric zones for holistic soil-health benefits.

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The benefits

More value from what you already have

More nutrients per tonne

Significantly increases the nutrient content in cattle manure per tonne, so the same heap does more.

More dry matter & humic acids

Boosts dry matter and humic acids in the soil, feeding long-term fertility rather than a single flush.

Smarter nitrogen

Optimises nitrogen management in livestock effluents, holding more value where you want it.

Better water resilience

Improves soil water resilience and structure once applied, helping land cope with wet and dry.

No more crusting

Prevents slurry-pit crusting and deposits, making stores easier to manage and agitate.

Stronger plant uptake

Enhances nutrient uptake by plants for healthier, more robust growth across the field.

What you can treat

If it's organic waste, it can become an asset

Manure

Farmyard manure of all kinds.

Slurry

Livestock slurry & effluents.

Green waste

Plant & composting material.

Digestate

Anaerobic digestion output.

Mushrooms growing from manure composting naturally with Bacteriolit in the barn
Application

Apply it straight to your manure and slurry

Simply apply Bacteriolit directly to your manure, slurry, green waste or digestate.

As a guide, one 500kg bag treats roughly 500m³ or 400 tonnes of manure. AgrAssure calculates the exact quantities for your volumes and acreage, so you're never over- or under-treating. Available in 500kg bulk bags or 20kg bags on a pallet.

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Quaterna Sol sprayed across the field, tap to see the product Tap to see the product
Newsprayable · Marcel Mézy Technologies
Sprayable soil activator

The proven SOBAC biology, now sprayable

Quaterna Sol carries the same living microbes as Bacteriosol, the fungi and bacteria that build humus and recycle the nutrients already in your ground, now in a form you spray on.

It is made for arable farmers who already live on the sprayer. No spreader, no separate pass, just the regenerative biology of SOBAC applied the way you already cover your fields.

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Why arable farmers are switching it on

Soil biology that fits your spray window

Goes on with your sprayer

Applied through the sprayer you already run, no new kit and no specialist contractor.

Even, accurate coverage

A liquid pass lays the biology evenly across the field, right to the tramline edges.

A lower carbon footprint

Far lower production emissions than synthetic nitrogen fertiliser, measured by ADEME and AgroParisTech, while building stable humus in your ground.

Same living biology

The same Marcel Mézy microbes proven across SOBAC, simply in a sprayable carrier.

Builds humus & recycles nutrients

Accelerates humus formation and unlocks the minerals already in your soil, season on season.

100% natural biology

No synthetic inputs, the soil-first SOBAC system you already trust on the land.

Application

If you can spray, you can apply it

No new kit, no separate trip across the field.

Fill the sprayer

Quaterna Sol goes into the sprayer you already run, ready to apply across arable ground.

Spray at the recommended rate

We tailor the exact rate and water volume to your sprayer, soil and cropping, so every hectare gets the right dose.

Let the biology build

The microbes establish and work through the season, with cumulative gains year on year, just like Bacteriosol.

Pricing & technical data on request

We tailor every quote to your acreage, application method and goals. Tell us about your farm and we'll send pricing and full technical information.

Request pricing