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library:articles:cec_bph_and_percent_sat 2010/03/10 14:45 library:articles:cec_bph_and_percent_sat 2017/03/16 11:38 current
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-=== METHOD 1: Use if a buffer pH (BpH) is available. ===+=== METHOD 1: Use if soil pH is <or= 6.4. Use if a buffer pH (BpH) is available. ===
** C.E.C. = (lb K / 780) + (lb Mg / 240) + (lb Ca / 400) + [12 × (7 - BpH)]* ** ** C.E.C. = (lb K / 780) + (lb Mg / 240) + (lb Ca / 400) + [12 × (7 - BpH)]* **
* If buffer pH is 7.0 or greater, use a 0 value as the remainder...Example: (7.0 - 7.1) = 0 * If buffer pH is 7.0 or greater, use a 0 value as the remainder...Example: (7.0 - 7.1) = 0
-=== METHOD 2: Use if Buffer pH is not available. ===+=== METHOD 2: Use if soil pH is >or= 6.5. Use if Buffer pH is not available. ===
** C.E.C. = [(lb K / 780) + (lb Mg / 240) + (lb Ca / 400)] × Factor ** ** C.E.C. = [(lb K / 780) + (lb Mg / 240) + (lb Ca / 400)] × Factor ** 