Term
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Definition
| Oven Dry Weight divided by Bulk Volume |
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Term
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Definition
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Term
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Definition
| 1.0 - 2.0 g/cm3, more commonly 1.1-1.8 g/cm3 |
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Term
| Particle Density Equation |
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Definition
| Oven Dry Weight divided by Particle Volume |
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Term
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Definition
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Term
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Definition
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Term
| If no data, assume what to calculate pore density? |
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Definition
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Term
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Definition
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Term
| Bulk Density Up, Pore Space... |
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Definition
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Term
| If BD < 1.37, Pore Space... |
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Definition
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Term
| Pore Space cannot be greater than... |
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Definition
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Term
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Definition
[Wet Weight - Oven Dry Weight] x 100
[Divided by Oven Dry Weight] |
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Term
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Definition
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Term
| How do you convert H2OWt to H2OV? |
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Definition
% H2O by Wt x BD
Density of H2O |
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Term
| Texture and PD are Stable/Unstable? |
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Definition
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Term
| Soil Structure, BD, pore space, stable/unstable? |
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Definition
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Term
| An acre of soil 6 inches deep weighs... |
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Definition
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Term
| 5 Functions of H2O in soil... |
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Definition
1. Chemical Reactions
2. Transport Medium
3. Biotic Usage (plants)
4. Buffer Temp. Changes
5. Shrink/Swell Capabilities |
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Term
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Definition
| Electronically Neutral, one end neg., one end pos. |
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Term
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Definition
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Term
| 2 properties of Dipolar Molecules. |
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Definition
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Term
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Definition
| Dipolar Molecule property. Attraction of unlike substances. H2O molecule to a mineral surface. |
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Term
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Definition
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Term
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Definition
| Dipolar Molecule property. Attraction of like substances. One H2O molecule to another. |
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Term
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Definition
INTO
Ease of movement of H2O (and gases) from the earth's atmos. n2 soil surface. |
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Term
| Influences of Infiltration |
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Definition
| 1. Soil Structure 2. Soil Texture 3. Intensive Rainfall 4. Water content of soil 5. Pore Space 6. Bulk Density 7. Clay Mineralogy - related to shrink/swell 8. organic matter 9. Slope (slope up, infiltration down), 10. "plugging effect" |
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Term
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Definition
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Term
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Definition
| Flow of water which hits the soil surface, but does not infiltrate @ point of contact. |
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Term
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Definition
| Ease of movement of H2O (and gases) w/in soil profile. |
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Term
| Influences of Permeability |
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Definition
| 1. Soil Texture/Clay Content 2. Clay Mineralogy 3. Soil Structure 4. Organic Matter 5. Pore Space, total size |
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Term
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Definition
| Ease of movement of H2O into, through and out of soil. |
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Term
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Definition
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Term
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Definition
| Column of H2O pulled up 1,034 cm |
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Term
| Maximum Retention Capacity |
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Definition
| Equiv. to being saturated with H2O content @ saturation - when all pores are filled with water. |
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Term
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Definition
| When all pores are filled with water. |
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Term
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Definition
| Amount of water held in soil after saturation and drainage n2 an underlying dry soil material (2-3 days) |
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Term
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Definition
| H2O movement in unsaturated conditions. |
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Term
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Definition
| Amount of H2O held in soil which cannot be taken up by plants. |
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Term
| Potential of Wilting Coefficient |
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Definition
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Term
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Definition
| H2O held even tighter than wilting coefficient. H2O held in soil SO tightly, H2O acts as vapor. |
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Term
| Potential Hydroscopic Coefficient |
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Definition
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Term
| Tension of Hydroscopic Coefficient |
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Definition
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Term
| Is there more pull at -1/3 bars? |
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Definition
| No - there's none - they're all the same. |
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Term
| Sands and Gravels don't... |
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Definition
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Term
| Formula 1 for H2O content |
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Definition
1. %H2O Wt = (H2Owt) x 100
Oven Dry Wt |
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Term
| Formula 2 for H2O content |
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Definition
2. %H2O Volume = %H2O Wt x BD
DH2O |
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