Root & Crops & Tubers· Dioscorea rotundata
Guide de culture du Yam
A starchy tuber crop central to food security in West Africa, which produces over 90% of the world supply. White yam (D. rotundata) is the most commercially important of the 600+ Dioscorea species.
Conditions de croissance
Exigences du sol
Type de sol et pH
Meilleurs types de sol : sandy loam, loam, silt loam
Plage de pH : 5.5 - 7 (optimal : 6)
Drainage : good
Besoins en nutriments (N-P-K)
Guide de plantation
Rendement et économie
Ravageurs et maladies courants
Ravageurs courants
- yam beetle
- mealybugs
- nematodes
Maladies courantes
- yam anthracnose
- yam mosaic virus
- dry rot
Utilisez la pour identifier les problèmes tôt et prévenir les pertes de récolte.
Conseils de culture
Mound or ridge planting (30-40 cm high) is essential for proper tuber development and drainage.
Staking vines to 2-meter poles increases yields by 30-40% compared to unstaked plants.
Milking harvest (removing tuber while leaving vine intact) allows a second smaller tuber to form.
Questions fréquentes
How long does Yam take to grow?
Yam typically takes 240 days from planting to harvest. Seeds germinate in about 21 days. The best planting season is early_spring, late_spring.
What soil does Yam need?
Yam grows best in sandy loam, loam, silt loam soil with a pH of 5.5-7. Good drainage is required.
What temperature does Yam need?
Yam grows best at 25-30°C. Frost tolerance: none. Heat tolerance: moderate.
What is the expected yield for Yam?
Yam yields approximately 12,000 kg/hectare under good conditions.
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