Vermont's land-grant extension publishes a method — not a one-size-fits-all rate. UVM AETL uses reactive aluminum + pH + target pH (Magdoff & Bartlett 1982). Unique among the 50 states. BR 1390.3 Table 3 is dispatched verbatim at its published target-pH 6.2 and 6.8 columns; the former linear approximation is not used. The combined source also carries comprehensive nutrient guidance. Live inputs: pH, reactive Al (ppm), and target pH 6.2 or 6.8 from UVM's published table. Enter the required soil-test values in the free calculator for tons of CaCO₃-equivalent per acre, ECCE-adjusted, with the citation.
Published source: University of Vermont — Reactive Aluminum + Modified Morgan (UVM AETL)
It depends on soil pH, reactive aluminum (ppm from Modified Morgan), and the target-pH column on UVM BR 1390.3 Table 3 — Vermont is the only state sizing lime from reactive Al this way. UVM AETL uses reactive aluminum + pH + target pH (Magdoff & Bartlett 1982). Unique among the 50 states. BR 1390.3 Table 3 is dispatched verbatim at its published target-pH 6.2 and 6.8 columns; the former linear approximation is not used. The combined source also carries comprehensive nutrient guidance. Enter those values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
UVM AETL uses reactive aluminum + pH + target pH (Magdoff & Bartlett / BR 1390.3 Table 3), not a buffer-pH crosswalk. UVM AETL uses reactive aluminum + pH + target pH (Magdoff & Bartlett 1982). Unique among the 50 states. BR 1390.3 Table 3 is dispatched verbatim at its published target-pH 6.2 and 6.8 columns; the former linear approximation is not used. The combined source also carries comprehensive nutrient guidance. Source: University of Vermont — Reactive Aluminum + Modified Morgan (UVM AETL).
Zone Forge computes Vermont lime from that state's published land-grant method (measured pH, reactive aluminum (Modified Morgan ppm), and the published target-pH column (6.2 or 6.8)) — lime calculator, soil-test fertilizer, and full variable-rate prescriptions. See the science →