What is depicted by the term Base Saturation?

The term Base Saturation specifically refers to the measurement of the amount of base cations, such as calcium, magnesium, potassium, and sodium, that occupy the cation exchange sites in soil relative to the total cation exchange capacity (CEC). This percentage indicates how well the soil can supply essential nutrients and can affect soil pH and overall plant health.

Understanding base saturation is critical for nutrient management, as a higher percentage often correlates with better fertility and improved plant growth potential. In contrast, lower base saturation typically suggests that acidic conditions may prevail, which can limit nutrient availability and affect plant development. Thus, the correct answer encapsulates the essence of what base saturation indicates about soil fertility and nutrient availability.