The Soul of Soil

Practical

The book covers, in sequence:

• Soil biology — the microbial, fungal, faunal, and earthworm communities and their roles in soil function.
• Organic matter dynamics — sources, decomposition, humus formation, carbon-nitrogen ratios, the labile vs [[humus|stable organic matter]] distinction.
• Mineral balance — pH, cation-exchange capacity, base saturation, the [[william-albrecht|William Albrecht]] / Kinsey “mineral balance” tradition adapted for organic management.
• Composting — windrow management, ingredient ratios, temperature curves, finishing, application.
• Cover crops — selection by purpose (N-fixation, biomass, weed suppression, nematode suppression), termination methods, integration with cash crops.
• [[crop-rotation|Crop rotation]] — building rotations that maintain soil fertility while managing pests and disease.
• Soil testing — what tests to run, how to read results, what action to take.

The book is mid-scale: serious gardeners can use it; small farms are its native audience; it remains relevant for medium farms. It predates and is more methodical than most contemporary soil-health-movement books.

Cultural

The book emerged from the Northeast [[organic-agriculture|Organic Farming]] Association (NOFA) tradition. Grace Gershuny served at USDA in the development of the National Organic Program and has been a long-arc voice in organic-certification politics. Joe Smillie was for decades a soil consultant to organic farms across the Northeast and Midwest. The book represents the operational distillation of a particular tradition — Northeast organic, mineral-balance-informed, composting-and-cover-crop-based — that has educated thousands of working farmers.

The 1995 and 1999 revised editions added material on humus chemistry, mycorrhizal partnerships, and on-farm composting at finer detail. The book is currently out of print in some recent stretches; used copies circulate at meaningful prices among working farmers.

Lenses still to grow

• The Northeast [[organic-agriculture|Organic Farming]] Association tradition and how The Soul of Soil fits in it
• The [[william-albrecht|Albrecht]] / Kinsey mineral-balance tradition’s continuation through the book
• Comparative analysis: The Soul of Soil vs Building Soils for Better Crops (Magdoff & van Es) vs Teaming with Microbes (Lowenfels & Lewis)
• Grace Gershuny’s role at USDA in the National Organic Program development

See also

Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.

• Enables: [[composting]]
• Shares approach with: [[the-new-organic-grower]]
• Counterpart to: [[dirt-the-erosion-of-civilizations]]
• Member of: [[book]]
• Pioneer of: [[organic-soil-management]]

Sources

• Smillie & Gershuny, The Soul of Soil: A Soil-Building Guide for Master Gardeners and Farmers (4th ed., Chelsea Green, 1999)
• Northeast [[organic-agriculture|Organic Farming]] Association (NOFA) publications and conference proceedings
• Grace Gershuny, Organic Revolutionary (memoir touching on USDA NOP work)
• Acres USA archives — long-running [[organic-agriculture|organic-farming]] publication

Rooted in life.