
| Better Farming Series 16. Roots and Tubers (FAO, 1977, 58 p.) |
| (introduction...) |
| Preface |
| Roots and tubers |
| Cassava |
![]() | Description of the plant |
![]() | Different kinds of cassava |
![]() | Where is cassava grown? |
![]() | How to grow cassava |
![]() | The place of cassava in a crop rotation |
![]() | Preparing the soil for cassava |
![]() | How to propagate cassava |
![]() | How to plant cassava |
![]() | Looking after the plantation |
![]() | How to harvest and store cassava |
![]() | The use of cassava in food |
![]() | (introduction...) |
![]() | Fresh cassava and cassava paste |
![]() | Dried casava and cassava flour |
![]() | Cooked cassava flours |
![]() | Starch and tapioca |
![]() | Cassava leaves |
| Yams |
![]() | Description of the plant |
![]() | There are many varieties of yam |
![]() | Where are yams grown? |
![]() | How to grow yams |
![]() | The place of yams in a crop rotation |
![]() | How to prepare the soil for yams |
![]() | How to propagate yams |
![]() | How to plant yams |
![]() | Looking after the plantation |
![]() | Harvesting and storing yams |
![]() | The use of yams in food |
![]() | (introduction...) |
![]() | Fresh and mashed yams |
![]() | Dried yams and yam flour |
| Sweet potatoes |
![]() | Description of the plant |
![]() | (introduction...) |
![]() | Varieties of sweet potato |
![]() | Where are sweet potatoes grown? |
![]() | How to grow sweet potatoes |
![]() | (introduction...) |
![]() | Propagation of sweet potatoes |
![]() | Looking after the plantation |
![]() | Yields of sweet potatoes and storing |
![]() | Sweet potatoes in human food |
| Tania and taro |
![]() | (introduction...) |
![]() | Description of the plant |
![]() | Tania or Xanthosoma |
![]() | Taro or cocoyam (Colocasia) |
![]() | Where are tania and taro grown? |
![]() | How to grow tania and taro |
![]() | (introduction...) |
![]() | Propagating |
![]() | Planting |
![]() | Looking after the plantation |
![]() | Harvesting |
![]() | Storing the tubers |
![]() | Tania and taro in human food |
| Suggested question paper |
Depending on variety, tania and taro are between 6 and 14 months in the field.
The tubers are ripe and ready for harvest when the leaves turn yellow and the plant begins to wither.
The fully ripe tubers should be harvested in dry weather. If you harvest during the dry season, the tubers may be left in the earth for some time and will not spoil.
When the field is wet, the ripe tubers must be harvested quickly. They may sprout and will then be no good for human food.
Each tania or taro plant may yield several harvests during one crop period.
As a rule, the harvests should be organized as follows:
- For tania
The first harvest begins about 3 months after planting. Three months after this first harvest, you can take three or four additional harvests from each plant. After each of these additional harvests, wait 2 or 3 weeks before taking tubers again from the same plant.
- For taro
The first harvest begins 6 to 8 months after planting. After that, harvest again two or three times from the same plant at intervals of 2 or 3 weeks.
When harvesting dig out the soil right up to the plant, take the biggest tubers and detach them from the parent plant. Then fill in the hole. Let the young tubers develop before harvesting again.