What Is a High Cec Value?
Organic Matter Has a Very High Cec Ranging from 250 to 400 Meq/100 G (Moore 1998). Because a Higher Cec Usually Indicates More Clay and Organic Matter Is...
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Moreover, is a high CEC good?
When a high CEC soil has good test levels, it offers a large nutrient reserve. However, when it is poor, it can take a large amount of fertilizer or lime to correct that soil test. A high CEC soil requires a higher soil cation level, or soil test, to provide adequate crop nutrition.
Likewise, what is a good cation exchange capacity number? Typical CEC Values in Soils
| Table 1. Cation exchange capacities at pH 7.0 of different soil types, textures and soil organic matter. | |
|---|---|
| Clay Type | |
| Kaolinite | 3-15 |
| Illite | 15-40 |
| Montmorillonite | 80-100 |
Similarly, it is asked, what is a good CEC in soil?
Therefore, it requires higher rates of fertilizer or lime to change a high CEC soil. When a high CEC soil has good test levels, it offers a large nutrient reserve.
Percent Saturation.
| Nutrient | Calcium (Ca++ ) |
|---|---|
| Nutrient Quantity (meq) | 67 |
| Nutrient Saturation | 67% |
| Base Saturation | Sum of nutrient saturation of Ca, Mg, and K 67 + 15 + 3 = 85% |
Which soil has the highest cation exchange capacity?
Clay has a great capacity to attract and hold cations because of its chemical structure. However, CEC varies according to the type of clay. It is highest in montmorillonite clay, found in chocolate soils and black puggy alluvials.
