"el" soils with permafrost
"ent" young soils A and C
"ept" inception of Bw
"and" volcanic soils
"ist" organic soils
"id" soils found in arid envrionments
"oll" productive ag soil, A
"ert" high in shrink swell clays
"alf" mature, developed Bt
"od" coniferous forest soils, low pH
"ult" very mature, weather soil
"ox" extremely weather, tropical soils
"accumulation of humus"
"high in soluable salts"
proportions of individual sand, silt, clay particles in soil.
>27%=Clay Loam Middle
>difference between % sand and silt, is >10%
Bd=Mass of oven dry soil/ Total volume of soil
Pd= Mass of oven dry soil/Volcume of soil solids
% Pore Space (porosity)
=100% - Bd/Pd * 100
Factors that affect Bd and Pd
Compaction: Up Same
Tillage: Down Same
Organic Matter: Down Down
water movement into soil at surface
water movement through soil
gas movement in the soil
gas, liquid, tree roots, combined
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