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The Alchemy of Living Soil
Working paper No. 1 · Version 0.1
Regenerating Earth begins beneath our feet
Living soil, biochar and open soil knowledge: the founding case for Loamistry
Abstract
Every garden, farm and patch of bush grows from soil, and soil is the part of a landscape that's easiest to overlook. Loamistry is a proposed Australian environmental not-for-profit for soil regeneration: careful field research, practical biochar work and soil knowledge shared in the open.
This paper sets out why we start with soil, what the science says about the carbon that leaves soil and the carbon that stays, what the Amazon's ancient dark earths (terra preta) can teach, and how we intend to measure our own work before we claim anything for it. It describes a beginning. Every program here is proposed, and Loamistry is not yet an established organisation.
How to read this paper. The chapters follow a soil profile, from the leaf litter at the surface down to bedrock, and the menu is that profile: the root shows how deep you've read. Real soils don't always have every horizon. This one does, for the sake of the story.
Begin the descentHorizon O · The organic layer
Leaf litter and decomposing plant matter on the surface: where everything that falls begins to become soil.
1 Why soil
1.1 The proposition
Loamistry grows out of hands-on work designing, planting and caring for productive gardens, work that has widened over time to include plant genetics, environmental observations, weather monitoring and long-term land stewardship. Running through all of it is the soil. Whatever the landscape is (tropical, temperate, degraded or already productive), understanding its soil comes first in deciding how to regenerate it.
The greatest leverage may not be in planting more trees, but in restoring the soil systems that allow entire ecosystems to thrive.
Loamistry would regenerate and study the foundation that every garden grows in. Its aim isn't to promote particular soil amendments or a style of farming. The aim is to understand living soil better, and to make that knowledge and its practical benefits easier for everyone to reach.
1.2 Vision and mission
Vision
A world where living soils are restored, understood and stewarded as the foundation of flourishing ecosystems, resilient food systems and healthy communities.
Mission
To advance soil regeneration through applied research, biochar innovation, environmental education, ecological restoration and the open sharing of practical knowledge.1.3 The name
Loamistry (said LOHM-iss-tree): the art, science and philosophy of cultivating living soil. It's a coined word, and these are the associations we chose it for, not an etymology:
| Element | What it brings |
|---|---|
| Loam | Fertile ground, the physical foundation of plant growth |
| Alchemy | Transformation, renewal, elemental processes |
| Chemistry | The science of minerals, carbon, nutrients and soil reactions |
| Mystery | The soil life and processes we can't see |
| Ministry | Service and care for the living world |
Alchemy provides the metaphor. Soil science provides the method. Regeneration provides the purpose.
In classical alchemy the Magnum Opus, the Great Work, is a slow process of refinement. In soil it is literal: waste wood becomes biochar, residues cycle back into the ground, and degraded ground can, under the right conditions, come alive again. Loamistry is secular in its public work and welcomes every scientific, cultural and philosophical view.
1.4 Values
- Regeneration
- Leave the landscapes we work in in better ecological condition over the long term.
- Stewardship
- Land care is an ongoing responsibility, not a single intervention.
- Scientific integrity
- Measure results, question assumptions and publish findings accurately.
- Reciprocity
- Share knowledge and benefits with the communities who contribute to the work.
- Accessibility
- Soil education for everyone, not only commercial farms and research institutions.
- Humility
- Know the limits of what's known; learn from evidence, experience and the knowledge of place.
- Intergenerational responsibility
- Decide with the ecological inheritance of future generations in mind.
Horizon A · Topsoil
Mineral soil darkened by humus, where most roots and most soil life are found.
2 Living soil
Soil isn't inert dirt. Within a handful of living soil, minerals, carbon, water, microorganisms and organic matter meet in countless relationships that sustain life on land. Carbon is the thread that ties them together.
2.1 The carbon cycle: a fast loop and a slow lock
Plants draw carbon dioxide from the air and turn it into sugars, wood and roots. When leaves, prunings and mulch fall to the ground, soil life eats them, and most of that carbon is breathed back out within years. That's the fast loop, and it's what keeps soil alive. A smaller share is held for decades to centuries as humus bound to clay. Biochar adds a slow lock: wood heated with little oxygen, whose carbon is mostly in a form that soil life can barely break down.
2.2 What we feed it
Each thing we add to soil does a different job, and its carbon lasts a different time. None is right everywhere.
| Amendment | What it does | How long its carbon lasts | Watch out for |
|---|---|---|---|
| Wood-chip mulch | Shades and cools the soil, holds water, feeds fungi as it breaks down | Mostly back to the air within about 5 years; about a tenth lingers in the soil for decades | Can lock up nitrogen at the surface for a while; keep it off stems |
| Compost | Adds nutrients and organic matter, and feeds soil life | Already partly decomposed, so longer than fresh residues, but it still turns over in years to decades | Quality depends on what went in; test bought compost for contaminants |
| Biochar | Holds water and nutrients, gives soil life a home, raises pH a little | About 97% persists, with a mean residence time of about 556 years | Charge it with nutrients first: raw char pulls nutrients from the soil |
| Manure | Nitrogen, phosphorus, potassium and organic matter | Like compost when composted; faster when fresh | Fresh manure can burn plants and carry weed seeds and pathogens |
| Lime, gypsum and rock minerals | Lime raises pH; gypsum improves sodic clays; rock dusts add slow minerals | Minerals, not organic carbon | Test first: they fix a measured problem, not a guess |
Mulch figures from the RothC soil-carbon model; biochar from a meta-analysis of decomposition studies.1,2
Horizon E · The leached layer
Water moving down washes clay, iron and organic matter out of this layer, leaving it pale.
3 What leaves, what stays
Most of the carbon we put into soil doesn't stay there. That isn't failure: it's how living soil works. But it changes what we can honestly say about building soil carbon.
3.1 Most carbon goes back to the air
Spread a tonne of wood-chip mulch and soil life gets to work at once. By the soil-carbon model RothC, run for a subtropical site at 20 °C, about half of the mulch layer is gone in a year and almost all of it within five. About a tenth of its carbon is held in the soil itself, peaking after three to five years and fading over the following century.2 Biochar behaves differently. About 3% breaks down within months, and the other 97% has a mean residence time of about 556 years.1
3.2 From months to millennia
Set side by side on a scale where each step is ten times longer than the last, the pools of soil carbon span from months to thousands of years.
3.3 A caution on carbon claims
Not all the carbon in biochar is automatically equivalent to verified, permanent removal of carbon from the atmosphere. Before Loamistry makes any quantified climate claim, it will need separate, defensible carbon accounting. Until then we describe what persists in soil, not what the climate gains.
Horizon B · Subsoil
Where what washed down from above accumulates: clay, iron, aluminium and humus.
4 Terra preta: soil that accumulates
4.1 The black earth people made
Terra preta, Portuguese for "black earth", is the dark, fertile soil found in patches across the Amazon basin, where the natural soils are old, weathered and poor. People made it, roughly 500 to 2,500 years ago, and it's still fertile today.4
What went into it
- Charcoal from cooking fires and smouldering, low-oxygen burns
- Ash, bone and fish remains
- Food scraps and plant waste
- Human and animal waste
- Broken pottery
4.2 Building soil over centuries
Charcoal is what made it last. Fresh organic matter feeds soil life and then mostly returns to the air within years; charcoal stays for centuries and keeps holding what the organic matter brings. So each year's biochar adds to the last. Add the same tonne of carbon every year as mulch and the soil's store levels off within decades. Add it as biochar and the store keeps building for centuries: the slow build that made terra preta.
4.3 One tool, not a cure-all
Loamistry's terra preta-style amendment is the same old pairing: biochar with compost and mulch. But biochar is one tool within soil regeneration, not a universal solution, and how it's made and used matters as much as whether.
- Charge it first. Raw biochar pulls nutrients from the soil. Soaking or composting it with a nutrient source first lets it give instead of take.
- Match it to the soil. It raises pH a little, and what it does depends on the soil and the char: it doesn't help everywhere. NSW DPI's guide to when it works, and when it doesn't, is a good primer.6
- Make it safely. Fire, smoke, carbon monoxide, fine particles and contaminated feedstock are real risks. Production follows fire and environmental rules, with records for every batch.
Horizon C · Parent material
Weathered rock and sediment, little touched by soil life: the material the soil above is made from.
5 The work
What Loamistry proposes to do, beginning with careful field research and growing only as capacity and evidence allow.
5.1 From soil to society
Our theory of change runs in four steps. It's a theory to investigate, not a promise: each step sits further from what we can measure directly. Better soil test results don't prove that food is more nutritious or people healthier.
- 01Soil regenerationBetter structure, biology, organic matter, nutrient cycling and water infiltration
- 02Ecological functioningStronger plant establishment, habitat and resilient vegetation
- 03Resilient food systemsAgricultural resilience, nutrient efficiency, less erosion, productive perennials
- 04Community wellbeingOver time: food security, environmental quality and education
5.2 Five connected programs
All five are proposed, and meant to grow in order: research and biochar first, the observatory last.
- IThe Living Soil LaboratoryApplied research and environmental monitoring
Soil baselines, field and lab assessments, and treatment comparisons at participating sites, with transparent field reports.
- IIBiochar AlchemyProduction, characterisation and practical research
Local feedstocks, production methods, quality records and soil measurements, with independent scientific guidance.
- IIIThe Soil CommonsShared knowledge and public education
Sampling guides, test interpretation, biochar guidance, field protocols and open research summaries, while private and culturally restricted records stay protected.
- IVThe Stewardship GuildCommunity participation and learning
Workshops, field days, biochar demonstrations and mentoring with qualified partners. Informal at first, not accredited training.
- VThe Living Soil ObservatoryLong-term environmental intelligence
Soil trends alongside rainfall, temperature, vegetation and management records, grown through reliable protocols, not by piling up devices.
5.3 The Living Soil Pilot
Loamistry's first flagship project, proposed to begin at one consenting site and grow to three as capacity develops. Its question:
Under what conditions does locally produced biochar improve measurable soil properties and plant performance, compared with other appropriate soil management?
With a qualified soil scientist's input, a demonstration trial would compare four treatments side by side, in replicated, randomised plots under the same management:
- 1Existing managementAn untreated or locally appropriate control
- 2CompostOr another appropriate organic amendment
- 3Prepared biocharDefined feedstock, process and application rate
- 4Biochar + compostThe combined, terra preta-style treatment
Each plot would be measured before treatment and at planned intervals, such as six and twelve months:
| Group | Example measurements |
|---|---|
| Chemical | pH, electrical conductivity, available nutrients, exchange characteristics |
| Carbon | Organic carbon concentration and, where justified, carbon stocks |
| Physical | Texture, bulk density, infiltration and aggregate stability |
| Biological | Selected biological indicators, where affordable and interpretable |
| Ecological | Ground cover, plant establishment and biodiversity indicators |
| Productivity | Growth, survival and harvest where applicable |
| Management | Biochar feedstock, production conditions, rates, methods and costs |
Every biochar batch gets its own record: feedstock, date and method, process temperature where it can be measured, dry mass, lab quality results, how it was charged, and where and at what rate it went. The first public output would be The Loamistry Living Soil Baseline Report, Volume I: soil conditions, methods, first applications and the monitoring plan, published before we claim any restoration outcome.
5.4 Numbers that mean something
Soil tests only help if they're read well and taken the same way each time. The scale every other number depends on is pH.
Strongly acidpH 4–5.5Aluminium can become toxic to roots; many nutrients scarce
Slightly acidpH 5.5–6.5Suits most garden plants and many natives
NeutralpH 6.5–7.5Most nutrients readily available
AlkalinepH 7.5–8.5Iron, manganese and zinc harder to take up
Strongly alkalinepH 8.5–10Often sodic; structure and nutrient problems
| Test | What it tells you | Reading it | How |
|---|---|---|---|
| pH | Acidity or alkalinity, which controls which nutrients plants can take up | Most garden plants do well around pH 6–7 in water | Lab test, or a field kit for a quick check |
| Electrical conductivity | Salt in the soil | Low is good; rising EC means salt building up | Lab test or EC meter |
| Organic carbon | How much organic matter the soil holds | Many Australian soils sit below 1–2%; watch the trend over years | Lab test |
| Nutrients | Nitrogen, phosphorus, potassium and others available now | Read against crop- and soil-specific ranges | Lab test |
| CEC | How many nutrients the soil can hold, like the size of a pantry | Sands low (under about 5); clays and organic soils high (over about 20 cmol/kg) | Lab test |
| Texture | Sand, silt and clay: drainage and water holding | Doesn't change; it's the context for every other number | Ribbon test by hand, or a jar test |
| Infiltration and structure | How fast water soaks in, and how crumbly the soil is | Faster infiltration and stable crumbs mean healthier structure | Ring infiltration test; slake test |
| Soil life | A quick sign of biological activity | More earthworms per spadeful is generally better | Count worms in a spade-sized block |
Sampling so changes are real
- Same spot, same season. Sample at the same time each year, ideally before amending.
- A composite sample. 10–20 small cores across the area in a zigzag, mixed into one.
- The same depth. Usually 0–10 cm for surface soil; record it and keep it.
- The same lab and method. Results from different labs or methods aren't directly comparable.
- Record everything. Date, place, depth, cores, and what was applied and when.
General guidance only: read results against the soil- and crop-specific ranges in the standard interpretation manual, and ask the lab.5
5.5 Measuring impact
Credibility will come from showing benefits, not from counting biochar batches or workshop attendance. Our claims get more cautious the further they sit from direct measurement:
- 01Activities and outputsWhat we did: sites assessed, samples analysed, trials established, workshops run, reports published, batches documented.
- 02Measured environmental outcomesWhat changed: soil properties, infiltration, plant survival, ground cover and carbon trends, against controls.
- 03Long-term contributionWhat we hope to influence: ecological resilience, stronger stewardship, wider use of what works, better public understanding of soil.
Horizon R · Bedrock
The solid rock beneath it all, on which every layer above rests.
6 Bedrock
6.1 Principles
Measure what changes. Share what works. Learn from what doesn't.
- Failures are findings. A trial that shows no effect is a result to publish, not a failure to hide.
- Evidence before claims. Qualified advisers, controls, repeated measurements, accredited labs and transparent reports. Mystery can inspire inquiry; it's never a substitute for evidence.
- Open, with care. Research is shared openly. Personal details, private property records and culturally restricted knowledge are not, and communities keep control of knowledge that is theirs.
- Public benefit, independently governed. Loamistry would have its own independent board and its own money. Its findings are for everyone, and any work it pays for would be decided independently, at fair market rates, and recorded.
- Grow only as fast as the foundations. Begin with one narrow pilot, prove the method, build the governance, and branch out only when capacity is real.
6.2 A proposed path
- Phase 0 · NowThe SeedOct–Dec 2026
A credible concept, a preliminary research design and a clear decision on registration.
- Phase IGermination2027
Proof of concept: field records, baseline measurements and a documented biochar demonstration.
- Phase IIRoot EstablishmentYears 1–3
A governed organisation, credible in its finances and its science, with measurable public-benefit programs.
- Phase IIIBranchingYears 3–10
Regional sites, education programs and a long-term soil-data network.
- Phase IVThe Living LegacyLong term
Research landscapes, observatories and education centres that outlive their founders.
Where things stand today, plainly:
| Matter | Status, October 2026 |
|---|---|
| Legal entity | Not yet established; Loamistry is a working name |
| Charity registration | Not yet applied for |
| Tax-deductible (DGR) status | A possible future goal |
| Governing board | Not yet formed; it will include independent members |
| Scientific adviser | Not yet appointed |
| Pilot site | Not yet confirmed |
| Funding | None; Loamistry is not accepting money |
6.3 Learning in the open
Loamistry's two co-founders, Joel and Karthik, are studying soil science alongside the work, and sharing the journey as they go. Free courses and soil-test workshops come first; then a university soil unit each; then research skill built by doing, through the pilot, with a scientific mentor. The shared benchmark is the Soil Science Society of America's Fundamentals of Soil Science syllabus, and its two core textbooks are where we start: Weil and Brady's The Nature and Properties of Soils and its shorter companion, Elements.
6.4 Get involved
Loamistry isn't asking anyone for money. Until it's registered and can say exactly what a gift is for, it won't. What helps now is people:
Soil scientists, agronomists and researchers: a qualified eye on the trial design is what makes the pilot credible. We'd value your challenge as much as your help.
Gardeners, growers and students: workshops and field days come later. For now, say hello, and tell us what you'd most like to learn about soil.
Get in touch Write to us at info@loamistry.org.
Follow along
Follow Loamistry on Instagram (instagram.com/loamistry), Facebook (facebook.com/Loamistry) and LinkedIn (linkedin.com/company/loamistry).
6.5 Founding declaration
We believe that the flourishing of life begins beneath our feet.
Within every handful of living soil exists an extraordinary convergence of minerals, carbon, water, microorganisms, organic matter and countless relationships that sustain terrestrial ecosystems. These hidden foundations deserve our curiosity, care and stewardship.
We seek to transform our relationship with soil, from something overlooked or exploited into something understood, respected and responsibly stewarded.
We believe that meaningful regeneration begins with humility: observing the land, understanding its needs, testing our assumptions and remaining willing to learn. Our work is grounded in the conviction that scientific knowledge and a sense of wonder can coexist.
For the soil. For life. For generations.
References
- Wang, J., Xiong, Z. and Kuzyakov, Y. (2016). Biochar stability in soil: meta-analysis of decomposition and priming effects. GCB Bioenergy. Biochar's two pools and their residence times.
- Coleman, K. and Jenkinson, D. S. RothC, a model for the turnover of carbon in soil. Run for wood-chip mulch at 20 °C and 25% clay over 100 years.
- Glaser, B. et al. (2001). The "Terra Preta" phenomenon: a model for sustainable agriculture in the humid tropics. Naturwissenschaften.
- Embrapa (Brazilian Agricultural Research Corporation), on Amazonian dark earths: their age, roughly 500 to 2,500 years.
- Peverill, K. I., Sparrow, L. A. and Reuter, D. J. (eds). Soil Analysis: An Interpretation Manual. CSIRO Publishing.
- NSW Department of Primary Industries. How biochar works (and when it doesn't).
- NSW Government. Biochar in farming systems and Soil testing and sampling.
- Lehmann, J. and Joseph, S. (eds) (2024). Biochar for Environmental Management, 3rd edition. Routledge.