Organic matter tends to decrease the ___ of soils.
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Bulk density
Thick, dark, surface horizons having >1% organic matter, and low base status
are_____epipedons.
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Umbric
A soil with C/N ratio of 600:1 could be a material such as
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Sawdust or leaves that have a low N content and a high potential for N
immobilization
Which of the following could be used to improve soil organic matter in a cropping
system?
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Reduce the plant materials that are harvested and return any residues back
to the field
The formation of a __________horizon is due to the microprocess of illuviation of clay into
it.
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Bt
Examples of land use capability units are a. IIw, b. VIs, and c. IIIe. The units ordered
from lowest to highest degree of limitation to use are ___.
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A-C-B
, In a humid climate (eventually with forest vegetation), a soil will develop the following
sequences of horizons over time in this order_________ (youngest to oldest).
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AC -> ABwC -> AEBt C -> AEBoC
The organic matter content of soils tends to decrease with increasing frequency of:
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Cultivation
Which is true when comparing aerobic vs anaerobic organic matter decomposition?
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Anaerobic degradation is much slower than aerobic and results in
compounds that are partially decomposed
The least intensively weathered subsoil horizon, recognized for its color and structure
differences, is a(an) ___ horizon.
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Give this one a try later!
Bulk density
Thick, dark, surface horizons having >1% organic matter, and low base status
are_____epipedons.
Give this one a try later!
Umbric
A soil with C/N ratio of 600:1 could be a material such as
,Give this one a try later!
Sawdust or leaves that have a low N content and a high potential for N
immobilization
Which of the following could be used to improve soil organic matter in a cropping
system?
Give this one a try later!
Reduce the plant materials that are harvested and return any residues back
to the field
The formation of a __________horizon is due to the microprocess of illuviation of clay into
it.
Give this one a try later!
Bt
Examples of land use capability units are a. IIw, b. VIs, and c. IIIe. The units ordered
from lowest to highest degree of limitation to use are ___.
Give this one a try later!
A-C-B
, In a humid climate (eventually with forest vegetation), a soil will develop the following
sequences of horizons over time in this order_________ (youngest to oldest).
Give this one a try later!
AC -> ABwC -> AEBt C -> AEBoC
The organic matter content of soils tends to decrease with increasing frequency of:
Give this one a try later!
Cultivation
Which is true when comparing aerobic vs anaerobic organic matter decomposition?
Give this one a try later!
Anaerobic degradation is much slower than aerobic and results in
compounds that are partially decomposed
The least intensively weathered subsoil horizon, recognized for its color and structure
differences, is a(an) ___ horizon.
Give this one a try later!
