Soil

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presentation for PDC DM Ch. 8

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Soil

  1. 1. Soil UPI- SF Kevin Bayuk
  2. 2. <ul><li>Soil Assessment </li></ul><ul><ul><li>Texture </li></ul></ul><ul><ul><li>Structure </li></ul></ul>
  3. 3. Soil Types
  4. 8. A Delicate Balance of Relationships
  5. 10. Limiting Factors <ul><li>three primary macronutrients: </li></ul><ul><li>nitrogen (N) </li></ul><ul><li>phosphorus (P) </li></ul><ul><li>potassium (K) </li></ul><ul><li>three secondary macronutrients: </li></ul><ul><li>calcium (Ca) </li></ul><ul><li>sulfur (S) </li></ul><ul><li>magnesium (Mg) </li></ul><ul><li>the micronutrients or trace minerals: </li></ul><ul><li>boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo) and selenium (Se) </li></ul>
  6. 11. Rhizobia
  7. 12. Rhizobial Relationships The pea root sends a chemical message that attracts Rhizobia , then surrounds the bacteria, which set up housekeeping inside the root’s cells. © Bert Dodson
  8. 13. Remineralize
  9. 14. Biochar
  10. 15. Ph and Fungal/Bacterial Ratio
  11. 16. Carbon Exudates and Root Prune-off After Grazing Carbon exudates from plant roots feed soil organisms, which feed soil nutrients to plants. Photo: Dr. Christine Jones
  12. 18. [email_address]

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