Coverage · Source

NDSU SF-882 — North Dakota Fertilizer Recommendation Tables and Equations + simple-rule lime

v1.5 (2026-08-23) · Franzen, D.W. (Reprinted 2010, original 2004). 'North Dakota Fertilizer Recommendation Tables and Equations' SF-882. NDSU Extension Service, North Dakota State University. Co-developed with South Dakota State University and University of Minnesota under the Tri-State Recommendation framework — but ND uses its own Olsen-P-anchored calibration owing to widespread calcareous soils. Wheat: Franzen (Revised Sept 2022) SF712 'Fertilizing Hard Red Spring Wheat and Durum'. Lime guidance: NDSU 'What is Soil Acidity?' + Dickinson REC regional acidity work (Augustin, 2018+).