PART 1. What is in soil and what does it do? 

Introduction

1.1 Introduction to soil fertility

1.2 Biodiversity and biomass of organisms in soil

1.3 Soil is a habitat for living organisms

1.4 Activities of soil biota

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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