Soil Orders Flashcards
alfisol horizons
A, Ap, E, Bt, C
Ochric, Argillic or Natric
andisol horizons
A, Bw, Ab
Melanic
aridisol horizons
A, Bw, Bk, Bt, C
entisol horizons
A-C/R, no B
Ochric, maybe Albic
gelisol horizons
O, A, C, jj, f
histosol horizons
Oa, Oe, Oi, Oap
Histoc
inceptisol horizons
A, AB, Bw, BC, C
Ochric
mollisol horizons
A, B, Bw, Bk, C, Ab
Mollic
oxisol horizons
A, Bo, C
Oxic
spodisol horizons
O, A, E, Bh, Bs, C
Spodic, Albic
ultisol horizons
A, Bt, Btg
acidic, Ochric or Umbric
vertisol horizons
A, Bss
alfisol description
high native fertility found in temperate humid regions, productive for growing
andisol description
soil formed by volcanic ash, susceptible to erosion
aridisol description
too dry for growth of plants, accumulates salts, low weathering intensity due to low moisture
entisol description
most recent, great diversity in environment and land use, most extensive
gelisol description
soils in cold climates, contain permafrost in surface, store large amounts of SOC
histosol description
histic epipedon, contains lots of carbon
inceptisol description
minimal horizon development, found in mountainous areas
mollisol description
mollic epipedon, in prairie regions, important productive soils
oxisol description
highly weathered soils found in tropical regions
