A soil contains the following exchangeable ions (see table). What is the CEC
(cmolc/kg)?
Ioncmolc/kg
Ca2+ 10
Mg2+ 6
K+ 4
Na+ 1
H+ 0
Al3+ 1
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, 22
Which cover crop will contribute the most N to the soil if it was left to decompose in
the field after it was grown (i.e., via green manuring)?
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Hairy Vetch (11:1)
Which type of wind erosion results in particles traveling in the upper atmosphere
sometimes long distances?
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suspension
Which soil forming factor is active?
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Climate
The behavior of a soil in response to manipulation at a specified moisture content is:
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, Consistence
Profiles of four soils of different age formed under a humid temperate climate
revealed the horizonations listed below. Arrange the soils from least to most
weathered.
Soil A: A-E-Bt1-Bt2-C
Soil B: A-Bw-C
Soil C: A-C
Soil D: A-Bo1-Bo2-C
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C-B-A-D
Which horizons in a soil containing A, B, C, and R horizons are included in its soil
solumn?
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A, B
Which term best describes the transformation of C and nutrients from organic forms
to plant available inorganic forms?
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Mineralization
, Soil organic matter degradation will be greatest when_____________
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There is sufficient soil moisture and aeration at neutral pH and relatively
warm temperatures to degrade residue with high levels of N
Water can sometimes move rapidly through the soil when_____
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the soil has many preferential flow pathways
From a plant's perspective, the most important role of soil structure in fine-textured
soils is to increase____.
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Macroporosity
Which type of water erosion can NOT be repaired by standard soil moving equipment
(e.g., plow)?
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(cmolc/kg)?
Ioncmolc/kg
Ca2+ 10
Mg2+ 6
K+ 4
Na+ 1
H+ 0
Al3+ 1
Give this one a try later!
, 22
Which cover crop will contribute the most N to the soil if it was left to decompose in
the field after it was grown (i.e., via green manuring)?
Give this one a try later!
Hairy Vetch (11:1)
Which type of wind erosion results in particles traveling in the upper atmosphere
sometimes long distances?
Give this one a try later!
suspension
Which soil forming factor is active?
Give this one a try later!
Climate
The behavior of a soil in response to manipulation at a specified moisture content is:
Give this one a try later!
, Consistence
Profiles of four soils of different age formed under a humid temperate climate
revealed the horizonations listed below. Arrange the soils from least to most
weathered.
Soil A: A-E-Bt1-Bt2-C
Soil B: A-Bw-C
Soil C: A-C
Soil D: A-Bo1-Bo2-C
Give this one a try later!
C-B-A-D
Which horizons in a soil containing A, B, C, and R horizons are included in its soil
solumn?
Give this one a try later!
A, B
Which term best describes the transformation of C and nutrients from organic forms
to plant available inorganic forms?
Give this one a try later!
Mineralization
, Soil organic matter degradation will be greatest when_____________
Give this one a try later!
There is sufficient soil moisture and aeration at neutral pH and relatively
warm temperatures to degrade residue with high levels of N
Water can sometimes move rapidly through the soil when_____
Give this one a try later!
the soil has many preferential flow pathways
From a plant's perspective, the most important role of soil structure in fine-textured
soils is to increase____.
Give this one a try later!
Macroporosity
Which type of water erosion can NOT be repaired by standard soil moving equipment
(e.g., plow)?
Give this one a try later!
