|Better Farming Series 16 - Roots and Tubers (FAO - INADES, 1977, 58 p.)|
|Description of the plant|
Sweet potatoes grow well in warm, sunny and humid regions. At the same time, they withstand drought very well. For that reason, they are suited to dry savanna country.
Sweet potatoes need regular rain to grow, especially when the leaves are coming into growth. But if there is too much rain at harvesting time, the tubers rot.
The sweet potato will grow in poor soils. The most suitable soil is a light, well- drained, sandy loam. If the soil is too rich in organic matter and nitrogen, the plant produces a great deal of useless stem and leaves, and only after a long time produces a very few tubers.