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Soil Orders Quiz :\

Terms in this set (12)

Alfisols
Found in: Oklahoma (OK)
•topsoil is gray brown or brown
•formed under temperate deciduous forests
•high level of nutrients in topsoil
Andisols
Found in: northwestern US
•volcanic glass content
•strongly weathered soil
Aridosols
Found in: Nevada (NV), New Mexico (NM)
•little leaching
•form in arid regions
•not much organic matter to replace nutrients
Entisols
Found in: Oklahoma (OK) western area
•sandy
•no evidence of horizon development
Gelisols
Found in: Alaska (AK)
•have permafrost
•organic layer has evidence of frost burn or seasonal thaw layer
Hostosols
Found in: Louisiana (LA), Florida (FL), northern Minnesota (MN), Wisconsin (WI), and Michigan (MI)
•found in bogs, peat
•predominately organic
•formed in waterlogged areas
Inceptisols
Found in: New England and Appalachian Mts.
•small amounts of organic matter
•weathering is minimal
•earliest soil horizon development
Mollisol
Found in: eastern Oklahoma (OK)
•found in temperate grasslands
•high levels of humus
•fertile w/ thick, dark brown topsoil
Oxisols
Found in: Hawaii (HI)
•found in hot, wet, tropical regions
•nearly featureless
Spodosols
Found in: upper New England, upper Michigan (MI), and South Carolina (SC)
•form under coniferous trees
•not suited for agriculture
Ultisols
Found in: Georgia (GA), Alabama (AL), South Carolina (SC)
•lack of litter
•low in nutrients
•found in hot, wet areas
Vertisols
Found in: Mississippi (MS) river basin around Louisiana (LA)
•high clay content
•deep, wide cracks
•shrink when dry, swell when wet
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