Hawaii's land-grant extension publishes a method — not a one-size-fits-all rate. UH-Manoa CTAHR derived from target pH × current pH × soil bulk-density class. Live calculator uses this state's published method and citation. Enter the required soil-test values in the free calculator for tons of CaCO₃-equivalent per acre, ECCE-adjusted, with the citation.
Hawaii lime is fundamentally bulk-density-dependent. High-rainfall windward sides leach lime faster. Leeward calcareous soils are alkaline — lime NOT needed. Pineapple fields: do NOT lime except on extreme acid Andisols.
Published source: Hawaii — UH-Manoa CTAHR Agricultural Diagnostic Service Center
It depends on the inputs Hawaii's land-grant method publishes — not a single national number. UH-Manoa CTAHR derived from target pH × current pH × soil bulk-density class. Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
UH-Manoa CTAHR derived from target pH × current pH × soil bulk-density class. Source: see the calculator citation. Source: Hawaii — UH-Manoa CTAHR Agricultural Diagnostic Service Center.
Zone Forge computes Hawaii lime from that state's published land-grant method (the lab values required by this state's published method) — lime calculator, soil-test fertilizer, and full variable-rate prescriptions. See the science →