Soil Orders Flashcards
very young soil, showing limited profile
entisol
show large cracks upon drying due to dominance of montmorillonite
vertisol
young soil with moderate profile development
inceptisols
limited change in parent material due to dryness
aridisol
dark surface due to high organic matter. includes some of the worlds most important agricultural soils
mollisol
subsoil has accumulation of Fe and Al oxides, humus and amorphous clays
spodosol
argilic B horizon with high base saturation
alfisol
the B horizon has high amounts of clay but low base saturation
ultisol
highly weathered soil with B horizom containing mainly 1:1 (kaolinite) clays
oxisol
includes the organic soil have developed in a water-saturated environment
histosol