Practice
Biological farming
Also known as: Biological agriculture, Eco-agriculture
A practitioner tradition of soil-and-plant-health-first agriculture developed in the mid-20th century by Albert Carter Smith, William Albrecht, and others, popularized through Charles Walters and ACRES USA magazine (founded 1971). Centers the biological function of soil — microbial activity, mineral balance, biological nitrogen cycling — as the foundation that determines plant health, animal health, and human health. Predates and significantly informed the modern regenerative-agriculture and soil-health movements; remains a working practitioner tradition with its own consultants, products, and farmer education networks.
Lineage
The tradition draws on:
- [[william-albrecht|William Albrecht]] (1888–1974) — University of Missouri soil scientist whose research on cation-exchange capacity, mineral balance (the “[[william-albrecht|Albrecht]] ideal soil”), and the link between soil mineral nutrition and human health became foundational
- Albert Carter Smith and the Brookside Laboratory (1947) — soil-testing methodology that translated [[william-albrecht|Albrecht]]‘s framework into practical farmer-accessible recommendations
- Charles Walters (1926–2009) — Kansas farmer, journalist, and founder of ACRES USA magazine in 1971; the institutional spine of biological farming for half a century
- Gary Zimmer — [[viroqua|Wisconsin]] farmer-author, popularized the term “biological farming” in mainstream practitioner literature; founder of Midwestern BioAg
Core principles
Biological farming centers on:
- Mineral balance — the right ratios of calcium, magnesium, phosphorus, potassium, and trace minerals; [[william-albrecht|Albrecht]]‘s framework
- Biological activity — soil microbial life, [[mycorrhizal-fungi|mycorrhizal fungi]], earthworms, [[soil-food-web|soil food web]]
- Cation exchange capacity (CEC) — [[soil|the soil]]‘s chemical capacity to hold and release nutrients
- Carbon-to-nitrogen ratio — managing residue and inputs to feed soil biology
- Brix and tissue testing — measuring plant sugar content and nutritional quality directly
The tradition is empirical and measurement-driven. Soil tests, tissue tests, refractometer Brix readings, and on-farm observation guide management decisions.
Influence
Biological farming significantly informed what became the modern organic, regenerative, and soil-health movements. ACRES USA readers — farmers, consultants, researchers — bridged the conventional, organic, and regenerative communities for decades when those communities barely talked to each other. [[joel-salatin|Joel Salatin]], [[gabe-brown|Gabe Brown]], Allan Savory, and many others have cited ACRES USA and the biological-farming tradition as formative.
See also
Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.
- Shares approach with: [[natural-farming]] · [[biodynamic-agriculture]]
- Member of: [[practice]]
Sources
- Eco-Farm: An Acres U.S.A. Primer, Charles Walters (Acres USA, 2003)
- The Biological Farmer, Gary Zimmer and Leilani Zimmer-Durand (Acres USA, 2017)
- [[william-albrecht|William Albrecht]]‘s collected papers (multiple volumes, Acres USA)
- ACRES USA archives 1971–present
Rooted in life.
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