Zone Forge reads your Kentucky soil test in Kentucky's own calibrated language — the critical levels and rate logic come straight from University of Kentucky — AGR-1 Lime and Fertilizer Recommendations (2025-2026), not a national average.
Published source: University of Kentucky — AGR-1 Lime and Fertilizer Recommendations (2025-2026)
University of Kentucky — AGR-1 Lime and Fertilizer Recommendations (2025-2026). Zone Forge cites the publication on every recommendation.
Yes — the Kentucky 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 Kentucky soil test in its own state's language, then builds source-cited fertilizer and lime recommendations and full variable-rate prescriptions. See the science →