Coverage · Source

Oregon — OSU Extension nutrient guides (W. Oregon EM-8963 + Eastern dryland FG-80/82/83/84 series)

v1.3 (2026-06-21) · PRIMARY WESTERN: Hart, J.M., Flowers, M.D., Anderson, N.P., Roseberg, R.J., Christensen, N.W., & Mellbye, M.E. (Revised July 2019, Reviewed 2023). EM 8963 — Soft White Winter Wheat (Western Oregon) Nutrient Management Guide. Oregon State University Extension Service. PDF: https://extension.oregonstate.edu/sites/extd8/files/documents/em8963.pdf. Note: the PDF OSU serves at that URL is internally dated 'Revised July 2011' although the catalog lists Rev. July 2019 (Reviewed 2023); Western Tables 3/4/5 were publication-verified against the served file — re-verify if a definitively-2019 copy surfaces. PRIMARY EASTERN: Lutcher, L.K., Horneck, D.A., Wysocki, D.J., Hart, J.M., Petrie, S.E., & Christensen, N.W. — FG 80 (Rev. March 2025, current PDF https://extension.oregonstate.edu/catalog/auto/FG80.pdf), FG 82 (Rev. November 2025, current PDF https://extension.oregonstate.edu/catalog/auto/FG82.pdf), FG 84 (Rev. March 2023 — current PDF not publicly downloadable as of 2026-06-10; P block gated), plus continuous-cropping siblings FG 81/FG 83 (the OSU Eastern Oregon fertilizer-guide series, replaces FG 54). The /sites/extd8/files/documents/fg8x.pdf URLs serve the SUPERSEDED Nov 2006 editions. Eastern P re-verified against the current editions 2026-06-10. SUPPORTING: PNW 631 (Schillinger/Wuest/Young, 2013) — Phosphorus fertilization of late-planted winter wheat in no-till fallow. PNW 636 — Estimating plant-available N release from cover crops. EM 9014 — Evaluating soil nutrients and pH by depth in situations of limited or no tillage in western Oregon. EM 9020 — Using the Nitrogen Mineralization Soil Test to Predict Spring N Fertilizer Rate: Soft White Winter Wheat Grown in Western Oregon. Regional guides: https://catalog.extension.oregonstate.edu/em8963 (primary, Western Oregon); https://extension.oregonstate.edu/catalog/fg-80-fertilizer-guide-winter-wheat-summer-fallow-systems + current PDF https://extension.oregonstate.edu/catalog/auto/FG80.pdf (Eastern low precip, Rev. March 2025); https://extension.oregonstate.edu/catalog/fg-82-fertilizer-guide-winter-wheat-summer-fallow-systems + current PDF https://extension.oregonstate.edu/catalog/auto/FG82.pdf (Eastern intermediate, Rev. November 2025); FG-84 (Eastern high precip continuous cropping, Rev. March 2023) — current PDF not publicly downloadable as of 2026-06-10; the https://extension.oregonstate.edu/sites/extd8/files/documents/fg84.pdf file is the SUPERSEDED Nov 2006 edition (P block gated); https://extension.oregonstate.edu/catalog/pub/pnw-631-phosphorus-fertilization-late-planted-winter-wheat-no-till-fallow (PNW-631 supplement)