Calculate soil cation exchange capacity (CEC) in meq/100g from soil texture, organic matter content, and mineralogy to assess nutrient holding capacity.
| Constant | Symbol | Value |
|---|---|---|
| Speed of light | c | 2.99792458×10⁸ |
| Planck's constant | h | 6.62607015×10⁻³‴ |
| Boltzmann constant | kʙ | 1.380649×10⁻²³ |
| Avogadro's number | Nₐ | 6.02214076×10²³ |
| Gravitational constant | G | 6.6743×10⁻¹¹ |
| Gas constant | R | 8.31446 |
| Elementary charge | e | 1.602176634×10⁻¹⁹ |
| Electron mass | mₑ | 9.1093837015×10⁻³¹ |
| Proton mass | mₚ | 1.67262192369×10⁻²⁷ |
| Fine-structure constant | α | 7.2973525693×10⁻³ |
Calculate soil cation exchange capacity (CEC) in meq/100g from soil texture, organic matter content, and mineralogy to assess nutrient holding capacity
Each component has a specific meaning:
Note: Interpret the cec meq/100g result against the clinical thresholds and context described above.
Enter the soil texture, organic matter content, mineralogy for the patient or scenario you are assessing. Calculate soil cation exchange capacity (CEC) in meq/100g from soil texture, organic matter content, and mineralogy to assess nutrient holding capacity. Use the cec meq/100g result to inform your clinical assessment.