Earthworms. Photos from Jill Clapperton (Canada)

 

Biological

  • What are soil organisms, how do they help soil fertility?
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Chemical

  • Which elements are essential for plant health and which may be toxic to plants?
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Physical

  • How do soil physical properties affect water movement and nutrient uptake through the plant roots?
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    • Soils are Alive!

    • The complete soil health reference for farmers, consultants and researchers
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