 | 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 |
Yields of sweet potatoes and storing
YIELDS
Depending on the varieties of sweet potato and on the way they are grown, yields vary from 4 to 7 tons per hectare on average. On a modern and well- cared- for plantation, yields may be much higher, and may even be more than 20 tons per hectare.
STORING
The length of time for which sweet potatoes can be kept differs with the varieties and the harvesting season. If they are harvested in dry weather, the tubers may be stored for 2 or 3 months.
But part of the harvest may be destroyed by rot during storage. Damaged tubers are most quickly attacked. Damp conditions encourage rot.
To prevent rot, dry the tubers in the sun for a time after harvesting.
For good keeping, the tubers of sweet potatoes should be harvested when they are quite ripe, when the stems and leaves have turned yellow. Take care not to damage the tubers. Remove all diseased and damaged tubers. Dry the tubers in the sun. Store them under cover in a dark, dry, cool, well- aired place. Put them on dry ground or on boards supported on posts, and do not heap them up too much.
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