Soils Pres 09

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soil overview for pdc

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Soils Pres 09

  1. 1. 09 Urban Permaculture Design Certification Course Courtesy of Fred Bove
  2. 2. <ul><li>Soil and Soil Structure </li></ul><ul><li>Drylands, Temperate, Tropics </li></ul><ul><li>Reading Weeds </li></ul><ul><li>Soil Remediation </li></ul>
  3. 3. Soil Types
  4. 5. Soil Transformation <ul><li>Indigenous material </li></ul><ul><li>Climate </li></ul><ul><li>Topography </li></ul><ul><li>Biota </li></ul><ul><li>Time </li></ul><ul><li>Human activity </li></ul>
  5. 7. Soil Composition <ul><li>N – P – K </li></ul><ul><li>Organic Material </li></ul><ul><li>Trace elements </li></ul><ul><li>pH </li></ul>
  6. 8. A Delicate Balance of Relationships
  7. 9. www.naturalsciences.be
  8. 12. Soil Remediation
  9. 13. Rhizobia
  10. 14. 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
  11. 15. Biochar
  12. 16. <ul><li>Weeds? </li></ul>
  13. 17. Sonchus asper – Sow thistle High N – neutral pH
  14. 18. Medicago hispida – Burr clover Low N – potentially fertile soil
  15. 19. Erodium cicutarium - Storksbill N ? Dry soil – saline conditions
  16. 20. Malva neglecta – mallow, cheeseweed deep nitrogen – disturbed soil
  17. 21. Stellaria media – Chickweed Very high N – neutral pH, if stunted, low P
  18. 22. Cyperus esculentus – Nut sedge Wet soil/ poor drainage – acid pH
  19. 23. Ipomea purpurea – morning glory low P – compacted soil
  20. 24. Brassica kaber – Charlock Low Ca or Low P – accumulates salt/P
  21. 25. Plantago lanceolata – Plantain K tester
  22. 26. Taraxacum officinale – Dandelion N & P rich soil – attracts earthworms food & medicine
  23. 28. Fred Bové Permaculture Consultant 415-864-4814 [email_address]

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