v1.0 (2026-05-23) · Wyoming Extension does not run a state agricultural soil testing lab — the WY Reclamation & Restoration Center sells field kits but explicitly notes they're 'not a substitute for soils information that can be had from certified soil testing laboratories.' UW refers farmers to commercial labs (Ward Laboratories in Kearney NE most commonly recommended). The S-4 routine analysis referenced in UW Extension materials is the Ward Labs panel. Wyoming was flagged 'could not be verified' in the 2025 SSSAJ multi-state assessment. Wyoming soils are calcareous and alkaline across the basin/range and dryland wheat country. Some high-elevation forest soils in the Bighorns and Wind Rivers may be mildly acidic, but cropland is not.
This source publishes a state method — its crop-specific rate tables are maintained in the extension bulletin rather than a fixed crop list, so Zone Forge doesn't claim a crop set here.
Alkaline-region advisory. Zone Forge follows the state's extension guidance that lime is rarely needed on these alkaline soils.
Yes — Zone Forge's calculators are free and need no signup. This page shows the states and crops Wyoming — alkaline-soil region (lime effectively not needed) covers so you can verify the source behind your recommendation.
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