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• Soil biological processes
• Soil organic matter
• Soil animals
• Soil fungi
• Soil bacteria
• Roots
• Soil biological fertility
• Soil management practices

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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Rod-shaped bacteria

Photo: van Vliet and Gupta