Cohesion
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Attraction of water molecules to other water molecules
Angular Blocky
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Common in B horizons with higher amounts of clay, common in B horizons
especially humid areas
total porosity
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ft
1-soil solids
or 1-ρb/ρs
Soil Texture
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The size distribution of inorganic (mineral) primary particles
Saturated Flow
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movement of water when all soil is filled (saturated), occurs by gravitational
and capillary forces
,Structureless Conditions
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-Massive
-Single Grain
Dry Consistence
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Loose, Soft, Hard
Colluvium
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deposited by movement of materials from upslope due to gravity and to a
lesser degree water
Improving Soil Aeration
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Improve soil aggregation (Ca, OM)
Improve soil drainage
Tillage - mixed results; important in the A_p, but may compact soil below it
, Well aerated soil - movement of gases is sufficient to meet biotic
requirements
gravimetric water content
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water on a dry mass basis
w = water mass/ dry oven soil mass
Physical Properties of Sand
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High Permeability and Low water retention
Plasticity Index (PI)
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water content range over which the soil has plastic properties
PI= LL-PL
Phosphates
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Attraction of water molecules to other water molecules
Angular Blocky
,Give this one a try later!
Common in B horizons with higher amounts of clay, common in B horizons
especially humid areas
total porosity
Give this one a try later!
ft
1-soil solids
or 1-ρb/ρs
Soil Texture
Give this one a try later!
The size distribution of inorganic (mineral) primary particles
Saturated Flow
Give this one a try later!
movement of water when all soil is filled (saturated), occurs by gravitational
and capillary forces
,Structureless Conditions
Give this one a try later!
-Massive
-Single Grain
Dry Consistence
Give this one a try later!
Loose, Soft, Hard
Colluvium
Give this one a try later!
deposited by movement of materials from upslope due to gravity and to a
lesser degree water
Improving Soil Aeration
Give this one a try later!
Improve soil aggregation (Ca, OM)
Improve soil drainage
Tillage - mixed results; important in the A_p, but may compact soil below it
, Well aerated soil - movement of gases is sufficient to meet biotic
requirements
gravimetric water content
Give this one a try later!
water on a dry mass basis
w = water mass/ dry oven soil mass
Physical Properties of Sand
Give this one a try later!
High Permeability and Low water retention
Plasticity Index (PI)
Give this one a try later!
water content range over which the soil has plastic properties
PI= LL-PL
Phosphates
Give this one a try later!
