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. Lime has its own live calculator for Texas with method-specific lab inputs.
Texas A&M AgriLife — Mehlich-3 sufficiency + High Plains research calibration rates these crops in Texas:
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 and K; Texas's live lime calculator is available separately with its own required lab inputs.
Yes — the free soil-test calculator covers source-cited P and K. Texas also has a live lime calculator on Zone Forge that uses the state's published method. Open the Texas lime guide or lime calculator for tons of CaCO3-equivalent per acre.
Zone Forge reads every Texas soil test in its own state's language, then builds source-cited fertilizer and a live lime calculator and full variable-rate prescriptions. See the science →