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24 Cards in this Set
- Front
- Back
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Soil |
Composed of inorganic and organics materials as well as air, water |
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Inorganic Soil |
This type of soil contains rock bits |
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Organic Soil |
Composed of mostly decomposing material |
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Soil composition |
5% organic 25% air 25% water 45% minerals |
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Soil Horizons |
O A B C |
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Mineral soil |
Three types are sand, silt, and clay. |
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Best Soil Types |
Contain 1/3 of sand, silt, and clay |
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Sand |
Mineral soil composed of the largest particles -0.06-2mm in diameter -drains water, allows it to release
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Silt |
Mineral soil composed of medium sized particles -0.002-.06mm in diameter. |
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Clay |
Mineral soil composed of fine sized particles. -Less than 0.002mm in diameter -Binds water and won't release it |
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Peat |
An organic soil of layered decomposed mosses -other types consist of decomposed vegetation |
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Muck |
An organic soil that is too decomposed to identify it's original composition |
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Humus |
An organic soil, the remains of dead organisms and other organic matter -an example is leaf litter |
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Organic Soils |
Typically more acidic than mineral soil and three types of this are Peat, Muck, and Humus |
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How do plants get elements from soil? |
Cation exchange! |
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Soil pH |
Important in getting elements from soil, |
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Acidic Soil |
pH 3.5 - 5 |
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Agricultural Soil |
pH 5-7 |
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Salty Soil |
An effect of irrigation damage Has a pH greater than 7 |
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Macroelements |
Three metals - Potassium (K), Calcium (Ca), Magnesium (Mg) Three non metals - Nitrogen (N), Phosphorous (P), and Sulfur (S) |
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Microelements |
-Like trace elements in the human body 5 Transition Metals - Copper (Cu), Iron (Fe), Zinc (Zn), Manganese (Mn), Molybdenum (Mo) 2 Nonmetals -Chlorine (Cl), Boron (B) |
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Water potential |
- Equation π= πp+ πm+ πo - πp+ πm cancel out - So: π = πo - ________ = the osmotic pressure |
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Transpiration |
- Evaporation of water from plant leaves - water moves towards more negative |
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Card back |
