Lecture 27 - Soil Profile & Horizons A typical...

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Lecture 27 Introduction The growing world population requires more food How can we increase the amount of food produced? o Increase the amount of land in cultivation o Increase the yield per unit of land under cultivation What is Soil? Complex ecosystem unto itself Unconsolidated mixture of: o Weathered/fragmented rocks o Secondary clay minerals o o
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Unformatted text preview: Soil Profile & Horizons A typical soil profile is composed of five soil horizons Each horizon has different attributes Figure 13-15 Soil Forming Factors 1. Parent material 2. Climate 3. Topography 4. Biota 5. Time Soil Types in Tennessee Deep, highly weathered soils with clay-enriched B horizons ( Ultisols ) o Occur most frequently Soils with clay-enriched B horizons ( alfisols ) o Greatest capacity for agricultural production Young soils with weakly developed horizons ( inceptisols) o On steep slopes...
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Lecture 27 - Soil Profile & Horizons A typical...

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