The formula to calculate the base saturation percentage is:
\[ BS = \left( \frac{SBC}{CEC} \right) \times 100 \]
Where:
Base saturation is a measure of the proportion of soil cation exchange capacity (CEC) that is occupied by base cations, such as calcium (Ca²⁺), magnesium (Mg²⁺), potassium (K⁺), and sodium (Na⁺). It is expressed as a percentage and indicates the fertility and nutrient availability of the soil. A higher base saturation percentage generally means that the soil has a higher capacity to retain essential nutrients, making it more fertile and suitable for plant growth.
Let's assume the following values:
Using the formula:
\[ BS = \left( \frac{10}{15} \right) \times 100 \approx 66.67\% \]
The base saturation percentage is approximately 66.67%.