The Iowa calculator utilizes the following equations:
Nutrient
Crop
Build/Maintenance
Lime
All Crops
If Target pH = 6 and pH < 6, Pure Lime Rec = (38,619 - (5,915 * Buffer pH))
* (6 * 0.167)
If Target pH = 6.5 and pH < 6.5, Pure Lime Rec = (49,886 - (7,245 * Buffer pH)) * (6 * 0.167)
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