Coverage · Source

New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework)

v1.4 (2026-06-21) · Flynn, R. (n.d.). Circular 676: Interpreting Soil Tests — Unlock the Secrets of Your Soil. NMSU Cooperative Extension Service. + Flynn, R. (n.d.). Guide A-146: Appropriate Analyses for New Mexico Soils. NMSU Cooperative Extension Service. + Glover, C.R. & Baker, R.D. (1996, rev. before 2001). Guide A-128: Fertilizer Guide for New Mexico. NMSU Cooperative Extension Service. + Heerema, R. (rev. 2013). Guide H-602: Pecan Orchard Fertilization. NMSU Cooperative Extension Service.

State extension method Computes rates in-app
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Crops covered

AlfalfaBarleyChile peppersCornCottonCucumbersDry beansForage legumesGrapesGreen beansLettuceOatsOnionsPasturePeanutsPeasPotatoesRyeSorghumSudangrassSweet cornTomatoesWatermelonWheat

Nutrient source for

NM

Frequently asked

What method does New Mexico — NMSU Cooperative Extension Service (Olsen-P calibration, calcareous-soil framework) use?

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

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