Name:

Soil and Water Questions

After reading pages 1-5 of Home Gardener's Guide to Soils and Fertilizers - EB1971 answer these questions:

  1. What is soil?  








  2. What does soil provide? 








  3. Compare and contrast soil permeability and soil water-holding capability. 








  4. Describe macropores structure and function.  








  5. Describe micropores structure and function.  








     
  6. How does a predominance of micropore space affect the soil's ability to warm external arrow in the spring?  








  7. Explain what is meant by a droughty soil.  






  8. If a clay particle was the size of a penny, a sand particle would be____________.
  9. How does the shape of sand and silt contrast with clay? 








  10. Why is soil surface area important? 








  11. It is important to remove rocks and gravel from soil?   True   /   False
  12. Using the words high, moderate and low, complete this table:
    Soil permeability water-holding surface area
    Loam
    Sandy loam
    Silt loam
    Clay loam
  13. What are peds (aggregates)? 








  14. How are peds formed? 








  15. Discuss or sketch the relationship among peds, macropores and micropores. 







  16. What is soil compaction? 






  17. What does compaction do to pore space? 






  18. What are some causes of compaction? 








  19. Sing the praises of organic matter. Or write down the praises of organic matter.  








  20. Sketch and label a side view diagram showing the conditions described in the first two paragraphs of the 'Slope, Aspect, Depth and Water' section on page 4.  







  21. Western Washington has a Mediterranean climate external arrow, which means summer irrigation for some plants. How does soil texture affect irrigation?  








  22. What is "runoff"? Why is it bad? How do you prevent it?  








  23. Tie together our wet spring, soil structure and soil management.