Zone Forge reads your Texas soil test in Texas's own calibrated language — the critical levels and rate logic come straight from Texas A&M AgriLife — Mehlich-3 sufficiency + High Plains research calibration, not a national average.
Published source: Texas A&M AgriLife — Mehlich-3 sufficiency + High Plains research calibration
Texas A&M AgriLife — Mehlich-3 sufficiency + High Plains research calibration. Zone Forge cites the publication on every recommendation.
Yes — the Texas 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 Texas soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →