Illinois's land-grant extension publishes a method — not a one-size-fits-all rate. Illinois Agronomy Handbook Ch. 8 Table 8.3 is live for corn (the Handbook's grain-crop table) at the published pH 6.0 goal by soil class (A-E) on the 9-inch incorporated basis. Other grain crops, the Handbook's one-third rate for no-till or pasture, and its forage and alfalfa goals are not computed here - use its crop- and tillage-specific recommendation for those. 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: Illinois Agronomy Handbook — Chapter 8 (Managing Soil pH and Crop Nutrients)
It depends on the inputs Illinois's land-grant method publishes — not a single national number. Illinois Agronomy Handbook Ch. 8 Table 8.3 is live for corn (the Handbook's grain-crop table) at the published pH 6.0 goal by soil class (A-E) on the 9-inch incorporated basis. Other grain crops, the Handbook's one-third rate for no-till or pasture, and its forage and alfalfa goals are not computed here - use its crop- and tillage-specific recommendation for those. Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
Illinois Agronomy Handbook Ch. 8 Table 8.3 is live for corn (the Handbook's grain-crop table) at the published pH 6.0 goal by soil class (A-E) on the 9-inch incorporated basis. Other grain crops, the Handbook's one-third rate for no-till or pasture, and its forage and alfalfa goals are not computed here - use its crop- and tillage-specific recommendation for those. Source: see the calculator citation. Source: Illinois Agronomy Handbook — Chapter 8 (Managing Soil pH and Crop Nutrients).
Zone Forge computes Illinois 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 →