Maryland's land-grant extension doesn't use a one-size-fits-all number — it uses a published method. maryland_texture_province v2.0 (2026-05-27) — added FIV-based nutrient block. Enter your soil-test values in the free calculator and Zone Forge returns tons of CaCO₃-equivalent per acre, ECCE-adjusted, with the citation.
UMD's table uses physiographic province (Coastal Plain vs Piedmont/Mountain) as a key dimension.
Published source: University of Maryland — Texture × Province lime (SFM-5) + Maryland Nutrient Management Manual FIV-based N/P/K (combined source)
It depends on your soil's buffer/acidity reading and your target pH — Maryland publishes a method, not a single number. maryland_texture_province v2.0 (2026-05-27) — added FIV-based nutrient block. Enter your values in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
maryland_texture_province v2.0 (2026-05-27) — added FIV-based nutrient block. Source: University of Maryland — Texture × Province lime (SFM-5) + Maryland Nutrient Management Manual FIV-based N/P/K (combined source).
Zone Forge computes every Maryland recommendation from that state's own published land-grant method — lime, soil-test fertilizer, and full variable-rate prescriptions. See the science →