4 Soils - Soil Science 101 Soil Properties Physical...

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Soil Science 101 Physical Chemical Biological Soil Properties
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What is soil? Soil is a dynamic natural body composed of solids, liquids, and gases, occurring on the earth’s surface, containing living matter, and supporting plants (USDA NRCS)
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Overview • Why Study Soils? • Tree Biology 101 • Soil Science 101 • Urban Soil Challenges • Urban Soil Solutions • Summary and Questions
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Soil Science 101 Physical Properties – Texture •Tilth •Moisture •Aeration •Fertility
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Soil Science 101 •Moisture •Aeration •Stability Physical Properties – Structure
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Soil Science 101 •Moisture •Aeration •Strength Physical Properties – Density Craul 1992
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Soil Science 101 Physical Properties – Depth •Drainage •Aeration •Space •Anchorage
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Soil Science 101 •Drainage •Aeration •Space •Anchorage Physical Properties – Depth
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Soil Science 101 Physical Chemical Biological Soil Properties
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Soil Science 101 Chemical Properties – pH Craul 1992 Harris et al. 2004
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Soil Science 101 Chemical Properties – Nutrients Harris et al. 2004
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Soil Science 101 Chemical Properties – Cation Exchange Capacity Al + Ca 2+ H + Mg 2+ K + NH 4 + Na + Clay Humus K + NH 4 + Mg 2+ Ca 2+ Al + Ca 2+ H + Mg 2+ K + NH 4 + Na +
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Soil Science 101 Physical Chemical Biological Soil Properties
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Soil Science 101 Biological Properties – Soil Organisms
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Soil Science 101 Biological Properties – Organic Matter •Temperature •Moisture •Aeration •Energy •Nutrients
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4 Soils - Soil Science 101 Soil Properties Physical...

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