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Soil Health

Healthy soil is the foundation of productive agriculture

We understand that each field is unique, which is why our soil health assessments are tailored to identify specific nutrient needs, microbial activity, and potential issues affecting your crops. 

Thorough soil testing, provides detailed data on soil biology, chemistry, and structure.

From this data, we produce targeted recommendations that include the ideal blend of biological and chemical inputs to improve soil fertility, structure, and resilience, ensuring long-term soil vitality and increased crop yields.

Soil Health

Metagenomic Soil Testing

Microbial Drivers of Soil Health

Microbial Disease Suppression

Microbial Transformation of Organic Matter

Microbial Management of soil health

Microbial Indicators of Soil Functionality

Metagenomic Soil Testing

Great Southern Biology are the Australian distributor for Solena Ag’s advanced metagenomic soil testing. This system uses DNA sequencing to analyze the full genetic profile of soil microbes not just limited markers. Solena’s “Prometheus” platform provides a complete picture of microbial diversity and function, enabling precise, science based recommendations. Unlike conventional tests, this approach uncovers critical insights into soil health, nutrient cycling, and resilience. It empowers agronomists and farmers to make smarter, more sustainable management decisions.

Microbial Drivers of Soil Health

Soil microorganisms are vital to soil health, driving nutrient cycling, enhancing structure, and supporting plant growth. Through diverse biochemical processes, microbes regulate carbon, nitrogen, phosphorus, and sulfur dynamics. They also improve soil stability, suppress diseases, and boost resilience. Managing microbial activity is essential for sustainable, productive agricultural systems and long-term soil fertility.

Microbial Disease Suppression

Soil borne pathogens significantly impact crop productivity, yet microbial biocontrol offers a sustainable, ecologically viable alternative. Beneficial rhizobacteria and fungi suppress pathogens through competitive exclusion, antimicrobial synthesis, enzymatic degradation, and induction of systemic resistance. Effective biocontrol depends on microbial compatibility, environmental conditions, and management practices that support beneficial microbial establishment and activity.

Microbial Transformation of Organic Matter

Soil organic matter (SOM) is essential for soil health, with its formation and stabilization primarily governed by microbial processes. Microorganisms decompose organic substrates, regulate nutrient release, and drive carbon cycling. Microbial necromass and mycorrhizal associations contribute to stable SOM pools. Management practices enhancing microbial activity are key to SOM accumulation and climate resilience.

Microbial Management of soil health

Soil health is driven by microbial abundance, diversity, and function. Intensive agriculture disrupts microbial balance, impairing fertility and resilience. Regenerative strategies including bioinoculants, organic amendments, and reduced tillage support beneficial microbes, enhancing nutrient cycling, structure, and disease suppression. Microbial management is central to sustainable agriculture and long-term ecosystem productivity.

Microbial Indicators of Soil Functionality

Hartmann, M., Six, J. Soil structure and microbiome functions in agroecosystems. Nat Rev Earth Environ 4, 4–18 (2023). doi.org/10.1038/s43017-022-00366-w
Soil functionality, encompassing productivity, nutrient cycling, and ecosystem support, is closely linked to microbial activity and diversity. Microbial biomass, enzyme activities, and community composition serve as sensitive indicators of soil health. These metrics reveal early signs of degradation and, when integrated into soil health assessments, inform sustainable land management practices.

Data Driven Biology

Baseline Test: Samples from your fields are sent away to an independent laboratory that extracts all the DNA from the soil and identifies all the known microbes contained therein. This data is then categorized, based on the genomic sequence of each microbe, to determine the microbial capacity to meet the needs of modern agriculture. From this point imbalances can be identified and remedied.

qPCR Test: A smaller number of microbes can be monitored throughout the growing season of a crop. This very economical test, can be used to determine in pathogen levels are becoming imbalances and whether an agronomic control method is working effectively.

What’s Involved

The first step is to contact GSB for a sample kit. Then, composite samples can be collected by growers or agronomists and sent back to our Albury headquarters, where they will be collated and sent for DNA extraction in a certified laboratory.

Key factors evaluated include bacterial to fungal ratios, mineral digestion and solubilisation, phytohormone production and pathogen identification.

Results

Within 6 weeks you will receive a report detailing microbial levels and their functions, fungal to bacterial ratios and key pathogen levels.

Report / Advice

The report will identify imbalances in your soils and suggestions for improving soil health, including product applications and crop rotation strategies. Our advisory services can be customised for ongoing support or case-by-case guidance to meet your farming goals.

Can I mix these biological products with chemicals?
Do I need to store my biological products in a Coolroom?
Can I mix my biological products with town water?
How do I increase the mobility of calcium in my cropping system?
What is a metagenomic soil test?
Do biologicals work?
How can GSB help me?
Can biological products replace fertilizer and chemicals?
Are biological products safe for humans and animals and the environment?
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Understanding you soil’s health is the first step to unlocking its potential.

Our soil testing service provides a detailed analysis that reveals the key factors influencing your crop’s productivity.

Order A Soil Microbiome Test