Chapter 3 HW
place the following levels of taxonomy in order from least specific to most specific
4-typic paleudult 2-udult 3-palcudult 1-ultisol
Which of the following diagnostic horizons would likely not restrict root growth in soils?
albic
a horizon designated as a Bt would likely have
an accumulation of clay
Which soil moisture regime has the highest soil moisture levels?
aquic
Which of the following subsurface diagnostic horizons would you expect to find in a soil in Tennessee?
argillic
in which of the following soil orders would recent alluvium most likely be a common parent material
entisols
Which of the following is an aridisol
fine-silty, mixed glassic haplogypsid
while investigating the soils of northern canada in summer, you dig a soil pit easily through fairly uniform peat material until, at 75 cm deep, your shovel hits a layer that is frozen solid. which type of soil are you most likely digging
histel
In which of the following epipedons is the organic matter level generally highest?
histic
if soils are to be used for crop production, for which soil order would land drainage be most critical
histosols
the two soils orders with low bulk densities that would be prone to soil erosion when dry are the
histosols and andsiols
you look up the soil series for the main soil type at your home. the classification is: loamy, kaolinitic, mesic, vertic eutrocrept. what is the soil order
inceptisol
Which of the following soil temperature regimes would provide the warmest and least variable soil temperature?
isohyperthermic
you look up the soil series for the main soil type at your home. the classification is: loamy, kaolinitic, mesic, vertic eutrocrept. what is the temperature regime
mesic
the main difference between an umbric epipedon and a mollic epipedon is
mollic has a base sat >50%, and umbric has a base saturation <50%
the two soil orders that are typical of the breadbaskets are the
mollisols and alfisols
In which of the following epipedons is the organic matter level generally the lowest?
ochric
soils in which of the following suborders would more likely occur in alaska than in texas
orthels
Which of the following subsurface diagnostic horizons would you expect to find in a highly weathered soil of the humid tropics?
oxic
which of the following describes a soil likely to contain a significant content of low activity clays
oxisol in central brazil
osmotic potential would likely be highest in soils of which of the following horizons
salic
Which of the following categories of soil taxonomy provides the greatest specificity of soil properties?
series
soils in this order are commonly sandy in texture, quite acidic and develop primarily under coniferous trees in cool to cold climates
spodosols
A soil has a thick black A horizon, a distinct B horizon, has reasonably stable soil strucuture, and was formed under grassland natural vegetation. Base saturation is >50% in all horizons. In which sbuborder is it mostly classified
udolls
you have a soil on your farm with a base saturation of 25%. it has an ochric epipedon and an argillic subsurface diagnostic horizon. which of the following would best describe this soil
ultisol
gilgai would be characteristic of
vertisol
the strong shrink-swell capability of clay soils predominantly composed of smectite makes these soils troublesome sites on which to build a home. in which soil order, would these soils be classified
vertisol