Wyoming's extension doesn't run its own soil-test calibration lab; it refers growers to neighboring-state methods. Zone Forge uses that published referral and discloses it in-app — no pretend precision. UW Extension wyoming_uw v1.0 — neighbor-routed primary Colorado CSU (eastern WY plains, high-plains Olsen-P + Mehlich-3 dual calibration) + secondary Montana MSU EB161 (Bighorn Basin / Star Valley / Wind River Valley mountain-valley irrigated systems, Olsen-P calcareous framework). UW Extension publishes no state-specific tables and explicitly directs producers to Ward Laboratories Inc. (Kearney NE) per 2022 Extension newsletter series (Orozco, Crook/Natrona/Campbell counties); regional referrals also include CSU SWP Lab (Fort Collins), USU Analytical Lab (Logan UT), U-Idaho ASL (Moscow ID), AgSource-Harris (Lincoln NE), Agvise (Northwood ND), Bighorn Co-op (Greybull WY), Simplot Grower Solutions (Powell WY). UW Wyoming Reclamation and Restoration Center field-kit page explicitly states the kits are 'not a substitute for soils information that can be had from certified soil testing laboratories' — confirming UW has no own analytical service. WY-specific operational overrides captured: (1) Bighorn Basin sugarbeet N convention from UW Powell R&E Center 1988-1993 trials (Van Tassell 1996 J. Production Agric. 9:390 — 8 lb N/ton root traditional + emerging 6.5 lb N/ton ERS model from UNL Maharjan 2025-2029 NRCS project, 240 lb N/ac cap, split timing pre-plant + 4-leaf sidedress); (2) Bighorn Basin dry bean (pinto/Great Northern/navy) starter-only N + Fe-chlorosis advisory (ortho-EDDHA chelate for IDC on high-pH calcareous soils, cultivar selection primary lever); (3) Bighorn Basin malt barley Coors/Briess/Malteurop contract target protein 11-12.5% N rules (1.5 lb N/bu; never > 1.6 lb N/bu; split 50/50 pre-plant/4-leaf); MSU EB161 K override (30 irrigated / 20 dryland lb K2O/ac); (4) statewide alkaline micronutrient defaults (Zn/Fe/B advisories); (5) Bighorn Basin + Wind River salinity pre-screen (ECe 2-6 dS/m common on lower-terrace bench fields). Alfalfa default Olsen-P 5-band rate table verbatim from USU Koenig + MSU EB161; established alfalfa fixes own N (0 baseline; establishment max 40 lb N/ac to avoid rhizobia inhibition). Winter wheat default (eastern WY dryland) 2.5 lb N/bu × yield goal minus profile NO3-N minus legume credit; band P 2× as effective as broadcast under cool spring soils. Irrigated corn default (Goshen/Platte) 1.0-1.2 lb N/bu CSU/UNL compatible. Lime continues via alkaline_region_wy (lime not needed — WY cropland calcareous statewide). Will never be 'calibrated' status under audit definition — WY has no own land-grant publication. NV/RI-pattern thin source. WY is the FINAL state in the alphabetical 50-state agronomy audit sweep — sweep complete 2026-05-27. Replaces prior null / needs_dedicated_source routing.
Published source: Wyoming — UW Extension (lab-referral framework + Bighorn Basin sugarbeet/dry-bean overrides)
Wyoming refers growers to neighboring-state calibrations. UW Extension wyoming_uw v1.0 — neighbor-routed primary Colorado CSU (eastern WY plains, high-plains Olsen-P + Mehlich-3 dual calibration) + secondary Montana MSU EB161 (Bighorn Basin / Star Valley / Wind River Valley mountain-valley irrigated systems, Olsen-P calcareous framework). UW Extension publishes no state-specific tables and explicitly directs producers to Ward Laboratories Inc. (Kearney NE) per 2022 Extension newsletter series (Orozco, Crook/Natrona/Campbell counties); regional referrals also include CSU SWP Lab (Fort Collins), USU Analytical Lab (Logan UT), U-Idaho ASL (Moscow ID), AgSource-Harris (Lincoln NE), Agvise (Northwood ND), Bighorn Co-op (Greybull WY), Simplot Grower Solutions (Powell WY). UW Wyoming Reclamation and Restoration Center field-kit page explicitly states the kits are 'not a substitute for soils information that can be had from certified soil testing laboratories' — confirming UW has no own analytical service. WY-specific operational overrides captured: (1) Bighorn Basin sugarbeet N convention from UW Powell R&E Center 1988-1993 trials (Van Tassell 1996 J. Production Agric. 9:390 — 8 lb N/ton root traditional + emerging 6.5 lb N/ton ERS model from UNL Maharjan 2025-2029 NRCS project, 240 lb N/ac cap, split timing pre-plant + 4-leaf sidedress); (2) Bighorn Basin dry bean (pinto/Great Northern/navy) starter-only N + Fe-chlorosis advisory (ortho-EDDHA chelate for IDC on high-pH calcareous soils, cultivar selection primary lever); (3) Bighorn Basin malt barley Coors/Briess/Malteurop contract target protein 11-12.5% N rules (1.5 lb N/bu; never > 1.6 lb N/bu; split 50/50 pre-plant/4-leaf); MSU EB161 K override (30 irrigated / 20 dryland lb K2O/ac); (4) statewide alkaline micronutrient defaults (Zn/Fe/B advisories); (5) Bighorn Basin + Wind River salinity pre-screen (ECe 2-6 dS/m common on lower-terrace bench fields). Alfalfa default Olsen-P 5-band rate table verbatim from USU Koenig + MSU EB161; established alfalfa fixes own N (0 baseline; establishment max 40 lb N/ac to avoid rhizobia inhibition). Winter wheat default (eastern WY dryland) 2.5 lb N/bu × yield goal minus profile NO3-N minus legume credit; band P 2× as effective as broadcast under cool spring soils. Irrigated corn default (Goshen/Platte) 1.0-1.2 lb N/bu CSU/UNL compatible. Lime continues via alkaline_region_wy (lime not needed — WY cropland calcareous statewide). Will never be 'calibrated' status under audit definition — WY has no own land-grant publication. NV/RI-pattern thin source. WY is the FINAL state in the alphabetical 50-state agronomy audit sweep — sweep complete 2026-05-27. Replaces prior null / needs_dedicated_source routing.
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