The capacity of a soil to exchange cations with the soil solution. Often used as a measure of potential soil fertility.

The quantity of positively charged ions (cations) that a clay mineral or similar material can accommodate on its negatively charged surface, expressed as milli-ion equivalent per 100 g, or more common [..]

The sum total of exchangeable cations adsorbable by the porous medium; expressed in moles of ion charge per kilogram of porous media.

The green pigment of plants that captures the energy from sunlight necessary for photosynthesis.

A measure of soil's ability to retain fertility (cationic forms of plant-essential elements); the sum of exchangeable cations absorbed by a soil, expressed in milliequivalents per 100 g of soil e [..]

cec; a measure of the soil’s ability to absorb (attach to the surface) cations and then release them to the soil solution or to plant roots; the cec of a soil is related to the amount of clay mineral [..]

A measure of the soil's ability to hold positively-charged nutrient ions for plant use. CF:

A soil's capacity to hold cations as a storehouse of reserve nutrients.

ability of the soil to retain cations and thus be fertile.

The capacity of soil to hold nutrients for plant use. Specifically, CEC is the amount of negative charges available on clay and humus to hold positively charged ions. Effective cation exchange capacity (ECEC) is reported for acid soils (pH<5). Expressed as centimoles of charge per kilogram of soil (cmolc/kg).

The sum total of exchangeable cations that a soil can absorb. The value represents the nutrient-holding capacity of the soil.

The ability of a soil or other solid to exchange cations (positive ions such as calcium, Ca2+) with a liquid.

a measure of the negative charge on soils (primarily on clays and organic matter). It is expressed as the quantity of cations (positive ions) that can be adsorbed by the soil and is expressed in centimoles of charge/kg of soil (6x1023 charged particles are contained in one mole of charge).

The sum of exchangeable cations that a soil can absorb at a specific pH. It is usually expressed din centimoles of charge per kilogram of exchanges (cmolc/kg).

A measure of the number of sites on soil surfaces that can retain positively charged ions (cations) by electrostatic forces.

The cation exchange capacity of a soil is an indicator of the number of cation exchange sites within the soil.

A soil's capacity to hold cations as a storehouse of reserve nutrients.

The measure of a soil's ability to retain positively-charged ions (cations); this measure is usually related to a soil's overall level of fertility

A measure of the availability of cations that can be displaced from a solid surface and exchanged for other cations. For geologic materials, the cation exchange capacity is the number of milliequivalents of cations that can be exchanged per 100 grams of dry sample.