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29 Cards in this Set
- Front
- Back
List the 9 essential MICRO nutrients. |
Manganese, Boron, Mo, Iron, Copper, Zinc, Nickel, Chlorine |
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List the essential MACRO nutrients. |
Magnesium, Phosphorus, Potassium, Carbon, Oxygen, Hydrogen |
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List the quasi-essential elements. |
Si, Co, N |
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List the eight names of the sub-types of structures. |
Prismatic, platy, sub-angular blocky, columnar, crumb, granular, wedge, angular blocky |
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What are the two types of nonstructures? |
Massive and single grain |
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Two materials that can stabilize structural units in the soil |
Oxides and carbonates |
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Soil aggregates are ________ particles. |
Secondary |
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Processes that form soil aggregates through the movement of particles |
Wetting and drying, freezing and thawing, faunal pedoturbation, floral pedoturbation |
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T/F All else being equal, well aggregated soil will be more healthy, have a lower bulk density, and a higher %PS than poorly aggregated soil. |
True |
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T/F Soils may provide a habitat that will host a perpetuate the existence of disease organisms. |
True |
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_______ soils purify and store water |
Mineral |
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T/F Soils were the source of discovery of the classic antibiotics such as penecillin. |
True |
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Examples of the importance of soil |
Hold tent pegs that hold up a tent for a camper, nutrients make a farmers crop grow |
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Soil is a(n) ________ factor affecting the mechanical support of plants. |
External |
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T/F Soils help burrowing animals protect themselves |
True |
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T/F Soils great beauty by growing forests, flowers, etc |
True |
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T/F Soils were the ultimate source of production of dinosaurs, etc that were converted into fossil fuels such as oil |
True |
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T/F Soil is an important component of ecosystems |
True |
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Define bulk density |
Mass per unit volume Mass of dry soil / volume of field moist soil |
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What are the four ecosystem services? |
Provisioning, regulating, supporting, and cultural |
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T/F Soil air usually has a higher carbon dioxide content than the air in the atmosphere. |
True |
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Soil colors are scientifically described by _______ color designations such as 10YR3/4 |
Munsell |
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Which type of soil structure is typically found in an undisturbed surface soil (A horizo) of a native undisturbed forest? |
Spheroidal |
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T/F Soil color may help us understand the water relationships in a soil thrift the presence or absence of mottles and/or gleying. |
True |
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T/F Soil color may help us understand the oxidation/reduction relationships in a soil. |
True |
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Soil color may be determined in part by the presence or absence of |
Organic matter, Iron oxides such as limonite and hematite |
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T/F Soil color may affect radiation energy absorption and thus affect soil temperature. |
True |
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Name things that affect soil temperature |
Isolation, thermal conductivity of soil materials, heat capacity (specific heat) of soil materials, ground covers, slope, aspect, length of daylight period, water content |
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T/F The liquid limit and the plastic limit are soil engineering terms. |
True |