Alaska's land-grant extension publishes a method — not a one-size-fits-all rate. UAF Cooperative Extension 'Fertilizer Nutrient Sources and Lime' Table 4 (water pH + SMP buffer index) is live: rates to raise the surface 6 inches toward the ~6.5 goal the table is published for, read from UAF's buffer rows 6.4-4.9 with linear interpolation between printed rows and a Zone Forge no-lime anchor at buffer 6.5. UAF states no CCE value, so tons are treated as ~100% CCE and divided by your product's ECCE. An SMP or Sikora buffer reading is required. 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.
Published source: Alaska — UAF Cooperative Extension Service
It depends on the inputs Alaska's land-grant method publishes — not a single national number. UAF Cooperative Extension 'Fertilizer Nutrient Sources and Lime' Table 4 (water pH + SMP buffer index) is live: rates to raise the surface 6 inches toward the ~6.5 goal the table is published for, read from UAF's buffer rows 6.4-4.9 with linear interpolation between printed rows and a Zone Forge no-lime anchor at buffer 6.5. UAF states no CCE value, so tons are treated as ~100% CCE and divided by your product's ECCE. An SMP or Sikora buffer reading is required. Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
UAF Cooperative Extension 'Fertilizer Nutrient Sources and Lime' Table 4 (water pH + SMP buffer index) is live: rates to raise the surface 6 inches toward the ~6.5 goal the table is published for, read from UAF's buffer rows 6.4-4.9 with linear interpolation between printed rows and a Zone Forge no-lime anchor at buffer 6.5. UAF states no CCE value, so tons are treated as ~100% CCE and divided by your product's ECCE. An SMP or Sikora buffer reading is required. Source: see the calculator citation. Source: Alaska — UAF Cooperative Extension Service.
Zone Forge computes Alaska 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 →