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Staking in forest zone

Production costs are high in traditional yam based cultivation systems in West Africa However the benefit-cost ratios are highly favorable. Mounds in savanna zone. Staking in forest zone. Staking in savanna zone. (Benefit-cost ratio for yam cultivation in Nigeria = 3.89). Preparing a mound.

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Traditional yam - PowerPoint PPT Presentation

Staking in forest zone