Texas's land-grant extension publishes a method — not a one-size-fits-all rate. Live scope: grass minimum rates from pH × texture (Table 5) — not a universal crop-goal map. Enter the required soil-test values in the free calculator for tons of CaCO₃-equivalent per acre, ECCE-adjusted, with the citation.
MOST OF TEXAS does not need lime. Acidic exceptions: East Texas Piney Woods, parts of Blackland Prairie, intensively-fertilized South Texas.
Published source: Texas A&M AgriLife — pH × Texture lookup (no buffer)
For the grasses in Texas A&M SCS-2001-05 Table 5, it depends on water pH band and soil texture (sand / sandy loam / clay) — a minimum limestone rate table, not a buffer-pH crosswalk or row-crop formula. Most of Texas does not need lime. Enter pH, texture, and grass category in the free Zone Forge lime calculator for tons of CaCO3-equivalent per acre, with the citation.
Texas A&M AgriLife SCS-2001-05 Table 5 publishes minimum suggested limestone rates for grasses by pH band × texture. Row crops and alfalfa are outside that exact table scope. Source: Texas A&M AgriLife — pH × Texture lookup (no buffer).
Zone Forge computes Texas lime from that state's published land-grant method (measured water pH and soil texture for SCS-2001-05 Table 5 minimum limestone rates on grasses (bermudagrass / bahiagrass / grass hay)) — lime calculator, soil-test fertilizer, and full variable-rate prescriptions. See the science →