Zone Forge reads your Arkansas soil test in Arkansas's own calibrated language — the critical levels and rate logic come straight from University of Arkansas — pH+Ca lime + Mehlich-3 nutrient recs, not a national average. Lime has its own live calculator for Arkansas with method-specific lab inputs.
University of Arkansas — pH+Ca lime + Mehlich-3 nutrient recs rates these crops in Arkansas:
Published source: University of Arkansas — pH+Ca lime + Mehlich-3 nutrient recs
University of Arkansas — pH+Ca lime + Mehlich-3 nutrient recs. Zone Forge cites the publication on every recommendation.
Yes — the Arkansas soil-test recommendation calculator is free and needs no signup. Enter your lab values for source-cited P and K; Arkansas'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. Arkansas also has a live lime calculator on Zone Forge that uses the state's published method. Open the Arkansas lime guide or lime calculator for tons of CaCO3-equivalent per acre.
Zone Forge reads every Arkansas 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 →