 | Better Farming Series 04 - The Soil: How the Soil is Made up (FAO - INADES, 1976, 37 p.) |
 |  | (introduction...) |
| | Preface |
| | Plan of work |
| | Why we study the soil |
|  | Different kinds of land |
| | (introduction...) |
| | The soil |
| | The subsoil |
| | The parent rock |
| | Examples of different soils |
| | What is soil made of ? |
| | (introduction...) |
| | Sand |
| | (introduction...) |
| | Sandy soils |
| | Clay |
| | (introduction...) |
| | Clay soils |
| | Silt |
| | (introduction...) |
| | Silty soils |
| | Humus |
| | (introduction...) |
| | What humus does |
| | Some practical advice |
| | Air in the soil |
| | Water in the soil |
| | (introduction...) |
| | Circulation of water in the soil |
| | Practical advice |
| | Living creatures in the soil |
| | Earthworms |
| | Rats and other animals |
| | Termites |
| | Other insects |
| | Microbes |
| | Suggested question paper |
|