What it is
The USDA Natural Resources Conservation Service (NRCS) developed the Soil Health Card as a field assessment framework that farmers can use to monitor soil biological activity without laboratory equipment. The card guides users through visual and tactile assessments of soil structure, aggregation, earthworm counts, root development, water infiltration, and surface residue cover.
Why we picked this
Lab soil tests are essential but expensive and infrequent. The Soil Health Card provides the in-field assessment that fills the gaps between lab tests, giving farmers a practical way to monitor soil biology in real time. The ability to visually assess soil health develops over time into an invaluable management skill that no instrument can replace.
Key takeaways
- The Soil Health Card includes 12 field-observable indicators that correlate with laboratory soil health metrics, providing rapid in-field assessment.
- Regular use (monthly or seasonal) creates a time series of soil health observations that reveals trends faster than annual lab testing.
- NRCS provides the cards for free through local offices, along with training on how to conduct assessments and interpret results.