Water yam / Greater yam
Dioscorea alata
A vigorous climbing vine cultivated for its large starchy tuber, an important staple food across the tropics.
Family
Dioscoreaceae
Temperature
20-32°C (absolute 14-40°C)
Rainfall
1200-4000mm (absolute 700-8000mm)
Altitude
2500m
Soil pH
5.5-6.5 (absolute 4.8-8.5)
Soil types
Deep well-drained fertile loamy soils.