11 terms

APES Chapter 8 Soil

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Terms in this set (...)

sand
The coarsest soil, with particles 0.05,2.0 mm in diameter.
silt
Soil with particles 0.002,0.05 mm in diameter.
clay
The finest soil, made up of particles that are less than 0.002 mm in diameter.
loam
Perfect agricultural soil with equal portions of sand, silt, and clay.
porosity
How quickly soil drains
cation exchange capacity (CEC)
or CEC
or cation exchange capacity
The ability of a particular soil to adsorb and release cations.
Base saturation
A measure of the proportion of soil bases to soil acids expressed as a percentage.
Soil bases
Calcium, magnesium, potassium, and sodium
Soil acids
Aluminum, and hydrogen
Only soil base not essential to plant nutrition
Sodium
Soil degradation
The loss of some or all of the ability of soils to support plant growth
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