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Deep Soil Preparation II

Soil preparation to a depth of 24 inches (60 cm):


  • allows plant roots to grow vertically instead of horizontally, which allows for:

    • greater drought resistance by allowing roots access to deeper water stores
    • 4 times the plants to be planted in a given area, which allows for:
      • up to 4 times the nutrient cycling
      • greater atmospheric carbon sequestration
      • 4 times the food to be grown in the same space
      • less soil lost to wind and water erosion

  • promotes soil structure by loosening the soil—creating pore space for air and water1, which leads to: 

    • an improved environment for plant roots
    • decreased plant water requirements due to greater soil water storage capacity

  • supports increased nutrient availability due to increased soil microbial life and increased depth of living soil structure.


Footnotes:

1) Soil loosening, while less important in sandy soils, becomes increasingly important as soil clay content increases.


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