Zone Forge reads your New Mexico soil test in New Mexico's own calibrated language — the critical levels and rate logic come straight from New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework), not a national average.
Per New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework) — below the critical level, a yield response to the added nutrient is expected.
Published source: New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework)
New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework). Zone Forge cites the publication on every recommendation.
Yes — the New Mexico soil-test recommendation calculator is free and needs no signup. Enter your lab values for source-cited P, K and lime guidance.
Zone Forge reads every New Mexico soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →