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Subsurface Horizons
Subsurface Horizons in soils
11
Agriculture
Undergraduate 3
11/16/2010

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Term
Agric (A or B)
Definition
Organic and clay accumulation just below plow layer resulting
Term
Argillic (Bt)
Definition
Silicate clay acumulation
Term
Calcic (Bk)
Definition
Accumulation of CaCO3 or Ca CO3 MgCO3
Term
Cambic (Bw, Bg)
Definition
Changed or altered by physical movement or by chemical reactions, generally nonilluvial
Term
Kandic (Bt)
Definition
Accumulation of low-activity clays
Term
Natric (Btn)
Definition
Argillic, high in sodium, columnar or prismatic structure
Term
Oxic (Bo)
Definition
Highly weathered, primarily misture of Fe, Al oxides and nonsticky-type silicate clays
Term
Salic (Bz)
Definition
Accumulation of salts
Term
Sombric (Bh)
Definition
Organic matter accumulation
Term
Spodic (Bh, Bs)
Definition
Organic matter, Fe and Al oxide accumulation
Term
Sulfuric (Cj)
Definition
Highly acid with Jarosite mottles
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