Zone Forge reads your Missouri soil test in Missouri's own calibrated language — the critical levels and rate logic come straight from University of Missouri — Soil Test Interpretations & Recommendations Handbook (Buchholz et al., 5/2004) + Woodruff Buffer/ENM lime, not a national average. Lime has its own live calculator for Missouri with method-specific lab inputs.
University of Missouri — Soil Test Interpretations & Recommendations Handbook (Buchholz et al., 5/2004) + Woodruff Buffer/ENM lime rates these crops in Missouri:
Published source: University of Missouri — Soil Test Interpretations & Recommendations Handbook (Buchholz et al., 5/2004) + Woodruff Buffer/ENM lime
University of Missouri — Soil Test Interpretations & Recommendations Handbook (Buchholz et al., 5/2004) + Woodruff Buffer/ENM lime. Zone Forge cites the publication on every recommendation.
Yes — the Missouri soil-test recommendation calculator is free and needs no signup. Enter your lab values for source-cited P and K; Missouri'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. Missouri also has a live lime calculator on Zone Forge that uses the state's published method. Open the Missouri lime guide or lime calculator for tons of CaCO3-equivalent per acre.
Zone Forge reads every Missouri 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 →