The following is an example of how University of Arkansas soil test results relate to the milli-equivalent base saturation concept. In this example, the percent saturation of the CEC is 55.2 for calcium, 6.9 for magnesium, 3.4 for potassium, 6.9 for sodium and 72.4 for total base saturation. Hydrogen is the main acidic ion. Some soil scientists believe that the cation exchange capacity should be saturated by specific percentages of the base cations Ca, Mg and K. Hence the terms percent base saturation. This concept leans more toward fortifying the soil than our philosophy of fertilizing for specific plant needs.
Some labs request and recommend for desired yield goals.
The Arkansas cooperative Extension Service offers its programs to all eligible persons regardless of race, color, national origin, religion, gender, age, disability, marital or veteran status, or any other legally protected status, and is an Equal Opportunity Employer .