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Explore real soil reference data

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Historical reference samples, not current REGENSOILL site measurements. LUCAS supplies organic carbon in g/kg; UKCEH supplies organic matter in %. No approved soil-health target or combined score is inferred.

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Each question uses the selected source record automatically.

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Public scoring calculator · demonstration only

This illustrates the published Cornell CASH organic-matter scoring curve using a hypothetical compatible measurement and an assumed texture. It is separate from the real samples above and is not sent to the AI.

UKCEH measures LOI at 375°C. Cornell's protocol uses 500°C with a correction. UKCEH has no measured texture column. Therefore this calculator does not score your UKCEH sample or certify soil health.

Choose a texture assumption to calculate an illustrative score.

Formula: 100 × normal CDF((OM − mean) / standard deviation). Curve parameters from Cornell CASH manual, printed page 48, Figure 2.31. This is one indicator score, not an overall Soil Health Index.