 | Better Farming Series 16 - Roots and Tubers (FAO - INADES, 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 |
Tania or Xanthosoma
Some varieties of tania have an aerial stem. It may reach 1 metre in length in the adult plant.
The leaf blade of tania is divided by a notch which makes the leaf arrow- shaped.
The leaf-stalk is attached to the edge of the leaf at the middle of the notch.
The leaf is bigger than the taro leaf; it is more sheath- like, thicker, stiffer and more shiny. It is permeated with a sort of wax.
Tania (Xanthosoma) plant
Tania leaf
The leaf-stalks are long, stiff and thick. They are flattened at the part attached to the leaf. The leaf-stalk of tania is a direct continuation of the midrib.
As a rule, the underground stems and tubers are well developed. They weigh between 1 and 5 kilogrammes and are rich in starch.
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