North Dakota's land-grant extension publishes a method — not a one-size-fits-all rate. 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.
~17% of ND has pH < 6.5, concentrated in SW ND (Dickinson REC region, Sandhills). NDSU 'What is Soil Acidity?' guidance: simple-rule 2 t/ac per 0.5 pH unit on loam+3%OM, with texture and OM modifiers.
Published source: NDSU SF-882 — North Dakota Fertilizer Recommendation Tables and Equations + simple-rule lime
It depends on the inputs North Dakota's land-grant method publishes — not a single national number. Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
Source: NDSU SF-882 — North Dakota Fertilizer Recommendation Tables and Equations + simple-rule lime.
Zone Forge computes North Dakota 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 →