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Bitter yam

Dioscorea dumetorum

Tuber crop requiring processing to remove bitter alkaloids before consumption, grown in West and Central Africa.

Family

Dioscoreaceae

Temperature

25-32°C (absolute 15-40°C)

Rainfall

1000-1700mm (absolute 700-4200mm)

Altitude

1500m

Soil pH

5.5-6.5 (absolute 4.8-8.5)

Soil types

Fertile well-drained soil.