Agriculture Reference
In-Depth Information
Andosols
E. Other soils that have a ferralic horizon with its upper boundary within 150 cm of the mineral
soil surface.
Ferralosols
F. Other soils that have:
¤Vertic features within 100 cm of the mineral soil surface
¤
No lithic or paralithic contact within 50 cm of the mineral soils surface
Vertosols
G. Other soils that have:
¤
An aridic epipedon
¤
One or more of the following diagnostic horizons: salic, hypersalic, salipan, gypsic, hypergypsic,
calcic, hypercalcic, calcipan, argic, or cambic horizon, whose upper boundaries are within 100 cm
of the mineral soil surface
Aridosols
H. Other soils that have:
¤A salic horizon whose upper boundary is within 30 cm of the mineral soil surface
¤
An alkalic horizon whose upper boundary is within 75 cm of the mineral soil surface
Halosols
I. Other soils that have gleyic features at least in some horizon 10 cm or more thick within 50
cm of the mineral soil surface
Gleyosols
J. Other soils that have:
¤A mollic epipedon
¤ An isohumic property
¤A base saturation of 50% or more (by NH
OAc) in all horizons, either between the mineral soil
surface and a depth of 180 cm, or between the upper boundary of any argic horizon and a depth
of 125 cm below that boundary, or between the mineral soil surface and a lithic or paralithic
contact, whichever depth is shallowest
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Isohumosols
K. Other soils that have a LAC-ferric horizon with its upper boundary within 125 cm of the
mineral soil surface
Ferrosols
L. Other soils that have either:
¤ An argic horizon which has its upper boundary within 100 cm from the mineral soil surface
¤A claypan which has illuviation argillan 0.5 mm or more thick in some parts, and which has its
upper boundary within 100 cm of the mineral soil surface
