West Africa Seed and Planting Material: the newsletter of the West Africa Seed Network (WASNET); 12

activities actors adoption agricultural Association benefits breeding cassava centers Central certification Committee constraints cooking banana coordination cost countries cowpea crops cultivars Department Directorate disease dissemination distribution Division economic environment established extension farm farmers fertilizer field genetic Government groups GSMS Guinea harmonization harmonization process hybrid IITA impact implementation imported improved improved seeds increased industry inputs Institute International introduction Lack land maize major Mali meeting million multiplication National Seed Nigeria objectives operational organizations plantain planting materials potential poverty present programs Promotion regional regulations result Rural season Seed and Planting seed growers seed market seed production seed sector seed trade seed yam Segou selected sell Service stem structures sub-Saharan Africa successes supply Support sustainable technical testing tonnes trials tuber varieties various villages West yield