Coverage · Source

Utah — USU Cooperative Extension (Olsen-P + NaHCO3-K calibration)

v1.3 (2026-06-21) · James, D.W. & Topper, K.F., eds. (2010 review). Utah Fertilizer Guide. Utah State University Extension. + Baker, M., Yost, M., Anderson, C., Cardon, G., Gale, J., Creech, E., Zesiger, C., & Taylor, K. (2024). Alfalfa Nutrient Management Guide. USU Extension, https://extension.usu.edu/crops/research/alfalfa-nutrient-management-guide.

State extension method Computes rates in-app
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Frequently asked

What method does Utah — USU Cooperative Extension (Olsen-P + NaHCO3-K calibration) use?

State extension method. Zone Forge computes this source's supported nutrient rates in-app and cites the published method.

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