Zone Forge reads your Minnesota soil test in Minnesota's own calibrated language — the critical levels and rate logic come straight from University of Minnesota Extension — Sikora Buffer (lime) + Dual-extractant MRTN (nutrients), not a national average.
Published source: University of Minnesota Extension — Sikora Buffer (lime) + Dual-extractant MRTN (nutrients)
University of Minnesota Extension — Sikora Buffer (lime) + Dual-extractant MRTN (nutrients). Zone Forge cites the publication on every recommendation.
Yes — the Minnesota 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 Minnesota soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →