Chapter Soil organic matter

Summary

This chapter includes the following topics

  • Organic matter in soil
  • Decomposition of organic matter
  • Nutrient cycles
  • Humus
  • Benefits of organic matter
  • Bulky organic matter
  • Methods of composting
  • Green manures with additional information on the following:
  • The rhizosphere
  • Carbon to nitrogen ratio
  • Organic matter levels in the soil
  • Organic soils
  • Mulching

Figure 18.1 Earthworms. Casting worms in the foreground eat organic matter and soil and most cast the waste on the surface. In the background are worms that only eat organic matter which we find in compost heaps and wormeries

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Growing Soilless

Growing Soilless

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