For Australian farmers

Custom Microbes (PGPR)

Price on enquiry

Our customised microbes, or Plant Growth Promoting Rhizobacteria (PGPR), are a group of beneficial bacteria that live in the soil around the roots of your plants. They deliver wide-ranging benefits that lift the growth, health and resilience of your crops, while reducing your dependency on synthetic inputs.

Tell us about your crop and soil, and we will match a PGPR blend to your operation.

Matched to your crop & soil Australian made & owned Bulk volume available Agronomy support included
Custom Microbes (PGPR)
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Custom-blended for your soil
PGPR-targeted formulation
Backed by DNA + soil tests
Australian made & owned
Bulk volume available
Expert support included
Custom-blended for your soil
PGPR-targeted formulation
Backed by DNA + soil tests
Australian made & owned
Bulk volume available
Expert support included
Custom-blended for your soil
PGPR-targeted formulation
Backed by DNA + soil tests
Australian made & owned
Bulk volume available
Expert support included

Why PGPR

The benefits of PGPR

PGPR are beneficial bacteria that live around the roots of your plants. They may be small, but their impact on your farm can be huge: working with your soil to grow healthier, more resilient crops while reducing your dependency on synthetic inputs.

Natural nitrogen fixation

Natural nitrogen fixation

Fix nitrogen straight from the air and convert it into a form your plants can use. A natural source of fertiliser that reduces reliance on synthetic inputs.

Unlocks phosphorus & minerals

Unlocks phosphorus & minerals

Solubilise phosphorus that is normally locked up in the soil and deliver other critical minerals like iron directly to the root zone, where crops can take them up.

Stronger root development

Stronger root development

Produce natural plant hormones (auxins) that drive deeper, faster root growth and stronger early establishment.

Suppresses disease pressure

Suppresses disease pressure

Outcompete and suppress soil-borne pathogens, easing disease pressure without leaning on synthetic fungicides.

Primes natural immunity

Primes natural immunity

Trigger the plant's own defences, priming crops for natural resistance to pests and environmental stress.

Builds lasting resilience

Builds lasting resilience

Help plants handle drought, heat and other stresses, for more resilient crops and steadier yields season after season.

SoiLife: the science of thriving soils

The science

SoiLife: the science of thriving soils

Healthy, living soil is the foundation of every successful farm, from broadacre cropping and orchards to grazing and pasture systems.

At SoiLife we rebuild that foundation using Australian-made, biologically driven solutions that restore life to your soil for long-term productivity.

To grow better above the ground, we must first bring life back beneath it.

Soil health

The three pillars of soil health

Most fertility programs focus only on chemistry. At SoiLife we go deeper, balancing the three pillars of true soil health. Biology is the link that powers the other two.

Physical health

Physical health

  • Stable aggregates let roots grow deep.
  • Air and water flow freely through the soil profile.
  • High water-holding capacity builds drought resilience.
Chemical health

Chemical health

  • Essential macro and micronutrients in the right ratios.
  • Correct pH for nutrient absorption.
  • Low salinity and minimal nutrient lock-up.
Biological health

Biological health

  • Decompose organic matter into nutrients.
  • Build and stabilise soil structure.
  • Protect roots from disease and stress.
PGPR for every crop

Tailored to your farm

PGPR for every crop

SoiLife has many PGPR species in our collection. Ask us about your specific crop and how the right blend can help you grow better.

Available for a wide range of crops, including:

  • Lucerne
  • Oats
  • Pasture grasses
  • Hemp
  • Sunflowers
  • Tree crops
  • Chickpeas
  • Ginger
  • Wheat
  • Barley
  • Canola
  • Lentils
100% natural guarantee 100% natural guarantee
No withholding period No withholding period
Certified organic allowed input SXC #22101 Certified organic allowed input SXC #22101

Application guide

Programmed for your operation

PGPR rates depend on your soil's existing biology. We tune the program after a baseline DNA test or soil panel.

Broadacre cropping icon

Broadacre cropping

Application rate 3 to 6 L / ha
Frequency At seeding + tillering
Best timing Seeding to early tillering

Apply in-furrow or via boom. Especially powerful on legumes and brassicas.

Horticulture / vegetables icon

Horticulture / vegetables

Application rate 5 to 10 L / ha
Frequency Every 3 to 4 weeks
Best timing Through the cropping cycle

Drench at transplant, then foliar through the cropping cycle.

Orchard / vine icon

Orchard / vine

Application rate 8 to 12 L / ha
Frequency 3 to 4 x per year
Best timing Bud burst, fruit set, post-harvest

Inject via fertigation. Best paired with humic or fulvic carriers.

Pasture / livestock icon

Pasture / livestock

Application rate 4 to 8 L / ha
Frequency 2 x per season
Best timing Spring and autumn

Apply with rainfall. Stimulates legume nodulation in mixed swards.

For every operation

A solution for every grower

Whether you run thousands of hectares or a small mixed farm, SoiLife's biological approach scales to fit your goals.

For farmers

  • Increase yield and animal health.
  • Relieve compaction for deeper roots.
  • Reduce pests and disease naturally.
  • Improve water retention and drought resilience.

For gardeners

  • Boost veggie patches and lawns.
  • Grow healthier, tastier produce.
  • See worms return to garden beds.
  • Build nutrient-rich, living soil.

For commercial projects

  • Improve parks and sports fields.
  • Support land rehabilitation and offsets.
  • Strengthen soil for carbon farming.
  • Accelerate re-vegetation success.
Healthy soil isn't an expense, it's an investment

The bottom line

Healthy soil isn't an expense, it's an investment

SoiLife offers the most cost-effective, science-backed path to long-term soil health and farm profitability.

By rebuilding the biology beneath your feet, you are growing more than crops. You are growing resilience, sustainability and legacy.

Healthy soil, healthy plants, healthy animals, healthy people.

Certified and credible

Certified organic allowed input100% natural guaranteeOcean friendly reef safeAustralian made and ownedPromotes biodiversity

Book a call

Ready to see what your soil can really do?

Share your soil tests or DNA results and we will formulate a PGPR blend for your situation. Simple, quick and tailored to your farm.

  • A quick 30 minute call, no obligation
  • A blend matched to your crop and soil
  • Clear next steps and honest pricing

Got questions?

Custom Microbes FAQ

How is a custom blend designed?

We start with your soil test (chemical) and ideally a DNA test (biological). From there we identify the gaps and formulate a blend of PGPR strains targeted to your enterprise.

What's the lead time for a custom blend?

Typically 4 to 6 weeks from formulation sign-off. We can hold blends in stable storage for staged delivery.

What's the minimum order for custom blends?

200 L is our typical minimum. Larger volumes attract bulk pricing, so book a call for a quote.

Will the blend work with my fertiliser program?

Yes. PGPR are designed to integrate with both synthetic and organic programs, and we will flag any incompatibilities upfront.