Kentucky's land-grant extension doesn't use a one-size-fits-all number — it uses a published method. UK AGR-1 (2025-2026) — Sikora-2 buffer with three target water-pH tables (6.4 / 6.6 / 6.8). Enter your soil-test values in the free calculator and Zone Forge returns tons of CaCO₃-equivalent per acre, ECCE-adjusted, with the citation.
Published source: University of Kentucky — AGR-1 Lime and Fertilizer Recommendations (2025-2026)
It depends on your soil's buffer/acidity reading and your target pH — Kentucky publishes a method, not a single number. UK AGR-1 (2025-2026) — Sikora-2 buffer with three target water-pH tables (6.4 / 6.6 / 6.8). Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
UK AGR-1 (2025-2026) — Sikora-2 buffer with three target water-pH tables (6.4 / 6.6 / 6.8). Source: University of Kentucky — AGR-1 Lime and Fertilizer Recommendations (2025-2026).
Zone Forge computes every Kentucky recommendation from that state's own published land-grant method — lime, soil-test fertilizer, and full variable-rate prescriptions. See the science →