Nevada'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. UNR Cooperative Extension does not run a soil-test lab and refers NV producers to USU (Logan), U-Idaho (Moscow), A&L Western (Modesto), and Western Labs (Parma) per Gatzke & Nelson 2009 PubID 2223. nevada_unr v1.0 documents that referral pathway and inherits per-crop calibration from U-Idaho Southern Idaho Fertilizer Guides (climatically equivalent to NV irrigated valley cropland — Snake River Plain ↔ Humboldt R. Basin, calcareous Olsen-P framework). Captures NV-specific overrides: Lovelock alfalfa no-post-establishment-fertilization convention (Breazeale 2007 UNR Coop Ext), alkaline micronutrient defaults (Zn/Fe/Mn deficiency risk on pH>7.8), and salinity pre-screen (NV irrigated valleys ECe 2-8 dS/m). Establishment-year alfalfa rates ship verbatim from USU Koenig + U-Idaho. Replaces prior null/needs_dedicated_source routing.
Published source: Nevada — UNR Cooperative Extension (lab-referral framework + Lovelock alfalfa convention)
Nevada refers growers to neighboring-state calibrations. UNR Cooperative Extension does not run a soil-test lab and refers NV producers to USU (Logan), U-Idaho (Moscow), A&L Western (Modesto), and Western Labs (Parma) per Gatzke & Nelson 2009 PubID 2223. nevada_unr v1.0 documents that referral pathway and inherits per-crop calibration from U-Idaho Southern Idaho Fertilizer Guides (climatically equivalent to NV irrigated valley cropland — Snake River Plain ↔ Humboldt R. Basin, calcareous Olsen-P framework). Captures NV-specific overrides: Lovelock alfalfa no-post-establishment-fertilization convention (Breazeale 2007 UNR Coop Ext), alkaline micronutrient defaults (Zn/Fe/Mn deficiency risk on pH>7.8), and salinity pre-screen (NV irrigated valleys ECe 2-8 dS/m). Establishment-year alfalfa rates ship verbatim from USU Koenig + U-Idaho. Replaces prior null/needs_dedicated_source routing.
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