Yam storage barn at IITA-Ibadan Boxes for carrying/storing yam germplasm Yam storage barn at IITA-Ibadan Tissued culture yam plantlets varieties Yam flower on display Scientist with Japanese after eating new technology yam IITA scientists observing yam plants in yam experimental plot IITA technician evaluating yam plants in greenhouse Planting of botanic yam seeds at IITA Ibadan Botanic yam seeds Botanic yam seeds at IITA Ibadan Staff sowing botanic yam seeds of yams into Jiffy peat pellets Botanic yam seeds at IITA Ibadan Irrigation and good staking enhance effective yam production at IITA Ibadan Yam germplasm collection of Dioscorea bulbifera at genebank field Yam germplasm collection of Dioscorea bulbifera at genebank field IITA scientist inspecting yam germplasm collection Yam propagation by vine cuttings at IITA Yam propagation by vine cuttings Yam propagation by vine cuttings at IITA Yam Physiologist, Hidehiko Kikuno inspecting yam seedlings propagated by vine cuttings at IITA Ibadan Men loading yam tubers into a truck for transport to markets Yam propagation by vine cuttings Scientist, Hidehiko Kikuno inspecting bulbils of yam Scientist, Hidehiko Kikuno explaining yam vine propagation technique Yam minisett technology Yam minisett technology Yam conservation and multiplication field at IITA Yam conservation and multiplication field at IITA Yam multiplication in the nursery Yam minisetts planting in a box Farmers cutting yam tubers into minisetts Yam plants in the field Woman selling yam tubers Diversity of Dioscorea female inflorescence Farmer selling yam in a market Woman selling yam tubers Yam grafting technique Yam grafting technique Yam grafting technique Yam grafting technique Yam grafting technique Yam grafting technique Yam grafting technique Yam gratfing technique Farmer selling yam in a market Yam in vitro plantlet Yam seedlings in polyethene bags in the nurseries Diversity of yam seedlings in the nusery Yam plants in the field genebank Yam plants in the field genebank Water yam plants in the field genebank Yam plants in the field genebank Yam plants in the field genebank Woman trader selling yam tubers in a farmers' market Man trader selling yam tubers at Bodija market Yam sellers in a local market Men off loading yam tubers transported to Bodija market Women pounding yam in a canteen Man eating pounded yam in a canteen Yam hawker in Bodija market Yam hawker in Bodija market Women traders selling yam tubers Big tubers of yam Yam plants in the field genebank Trader obtains current market prices of yam through the Market Information System established by IITA Staff explaining points to yam training participants at IITA yam barn Staff and participants during yam field training day Varieties of water yam tubers on display, five months after planting TDa 02/00012 variety of water yam five months after planting TDa 98/01166 variety of water yam five months after planting TDa 00/00103  variety of water yam five months after planting TDa 99/00240 variety of water yam five months after planting TDa 291 variety of water yam five months after planting TDa 297 variety of water yam five months after planting TDa 93-36 variety of water yam five months after planting TDa 85/00250 variety of water yam five months after planting Infected yam tuber Yam tubers and yam minisetts White yam varieties: TDr 95/19158, TDr 97/00903, TDr 97/00793 and TDr 97/00632 with yam seeds Yam is important in West Africa as food staple Yam tubers for sale in a farmers' market in Nigeria IITA Yam Physiologist, Dr. Hidehiko Kikuno training farmers on the propagation of yam through vine cuttings Yam tubers with yam seeds/ yam minisetts Yam tubers with yam seeds/ yam minisetts Yam tubers with yam seeds/ yam minisetts Yam variety TDa 00/00194 with yam seeds Yam variety TDa 98/01166 with yam seeds Yam variety TDa 01/00012 with yam seeds Yam variety TDa 01/00012, 98/01166 and TDa 00/00194 with yam seeds IITA research associate with participants at IITA yam experimental plot Research associate with participants during yam field training Training participants learning to plant rooted yam cuttings Field worker tending hybrid seedlings of white yam grown in IITA Woman selling dried yam tubers Woman selling dried yam tubers (elubo isu) Researcher inspecting yam plants with plastic mulch Yam tubers for sale in the market Hidehiko Kikuno (seated second left) during a performance by members of the Shabamaliki village IITA Yam Physiologist standing in new yam technique trial at Shabamaliki village Yam seedling produced by vine propagation technique Yam seedling produced by vine propagation technique IITA technician evaluating yam plants in greenhouse Harvested yam tubers Yam tubers for sale in Bodija market Ibadan Yam tubers for sale in Bodija market Ibadan Yam tubers for sale in Bodija market Ibadan Yam tubers for sale in Bodija market Ibadan Women traders selling dried yam tubers Man selling yam tubers in Bodija market Woman selling dried yam tubers in Bodija market Woman selling yam flour in Bodija market Woman trader selling dried yam tubers Man eating "amala" in a canteen Dry rot infected yam tuber Dry rot infected yam tuber White scale insects infested yam tubers Yam leaf infected with yam mosaic disease Infected yam tubers Infected yam tubers Yam tuber infected with nematode Nematode-infected yam tuber Nematode-infected yam tuber Nematode-infected yam tuber Nematode-infected yam tuber Nematode-infected yam tuber Nematode-infected yam tuber Rot and anthracnose-infected yam tuber Rot and anthracnose-infected yam Leaf spots disease infected yam plants Scientist ensuring the genetic integrity of plants Bacteria-infected yam plantlet Bacterial infection leads to plant death in tissue culture tube Scientist checks on health status of yam plants in greenhouse Yam in vitro cultures in genebank Sweet potatoes weevil Women traders selling yam tubers in a market Women carrying baskets of yams from farm Bacterial infection of yam in vitro plantlet Bacterial infection leads to plant death in tissue culture tube Selling yam in a market Scientists during yam production workshop Food recipes produced from yam Yam sett from yam vines Yam tuber storage barn Farmer harvesting cocoyam in the farm Storing yam in local yam barn Woman trader displays yams for sale in a local market Representatives of farmers' organizations at yam meeting Yam plants infected with yam leaf disease Yam leaves infected with yam anthracnose disease Yam leaves infected with yam leaf disease Yam leaves infected with yam anthracnose disease Yam leaves infected with leaf spots disease Severe root rot infection on yam tuber Woman tying yams in a local storage barn Yam tuber with Scutellonema nematode Insect pests infested yam plants Yam tubers severely infected with root rot disease Resistant and susceptible varieties of yam tubers Yam leaf spots infected yam leaves Yam inflorescence Infected yam plants Yam leaf spots infected yam leaves Yam leaf infected with yam anthracnose disease Yam inflorescence Yam inflorescence Yam leaf infected with yam mosaic disease Infected yam leaves Yam mosaic disease infected yam leaves Yam plant infected by yam mosaic virus Yam leaf infected by yam mosaic virus Yam tubers infected by dry rot Yam leaf infected by yam anthracnose disease Tuber rot disease of yam Dead plants of yam Yam tubers infested by yam scale insects Yam tubers infected by dry rot Infected yam plants in a farm Infected yam plants in a farm Yam beetles feeding on yam Yam plant infected with yam mosaic virus Yam leaf infected with yam mosaic virus Infected yam tuber Infected yam with rot Yam tuber infested by beetles Variability of yam tubers on trial Storing seed yams on shelves in yam barn Storing seed yams in boxes Pile of yams ready for tying Man inspecting yams tied in a local storage barn Inner view of yam storage barn with yams tying Men storing yams Storing seed yams in boxes in storage yam barn Storing yams inside storage pits Storing seed yams on shelves in storage yam barn Storing seed yams in boxes Farmer receives improved seed yams Participants listening keenly during yam field training and demonstration Researchers cutting seed yams into miniset Participants listening keenly during yam field training and demonstration Selection of mother seed yam Participants during yam field training and demonstration Researcher demonstrating how to plant seed yams Selling yam tubers in a local market Researcher explaining points to participants on yam production Researcher showing seed yams to farmers Researcher explaining points to participants on planting of yam minisetts Researcher explains points to participants on plastic mulch Researcher demonstrating cutting of yam minisetts Buying and selling yams Buying and selling yam Yam tubers Water yam variety - TDa 01/00024 Water yam variety - TDa 01/00060 Water yam variety - TDa 01/00083 Water yam variety - TDa 297 Water yam variety - TDa 01/00002 Water yam variety - TDa 01/00092 Water yam variety - TDa 01/00063 Water yam variety - TDa 01/00012 Water yam variety - TDa 01/00073 Water yam variety - TDa Ewura Togo Water yam variety - TDa 01/00017 Water yam variety - TDa 01/00185 Water yam variety - TDa 01/00004 Water yam variety - TDa 01/00039 Water yam variety - TDa 01/00295 Water yam variety - TDa 01/00204 Water yam variety - TDa 01/00074 Water yam variety - TDa Boko Water yam variety - TDa 01/00003 Water yam variety - TDa 01/00203 Sweet potatoes Water yam variety - TDa 01/00032 Water yam variety - TDa 01/00043 Water yam variety - TDa 01/00064 Water yam variety - TDa 01/00299 Water yam variety - TDa 01/00090 Scale on cocoyam tuber Inner view of yam storage barn with yams tying Infected yam tuber Resistance and susceptible yam plantlets Yam hawking in a local market Farmer displaying tubers of yam Yam Anthracnose disease Men arranging yams at wholesale market in Ghana Men arranging yams at wholesale market in Ghana Women buying and selling yams in Ghana Women buying and selling yams in Ghana Women buying and selling yams in Ghana Yam wholesale market bubbling with activities in Accra, Ghana Yam wholesale market bubbling with activities in Accra, Ghana Yam wholesale market bubbling with activities in Accra, Ghana Yam wholesale market bubbling with activities in Accra, Ghana Gari and yam market Gari and yam market Gari and yam market New yam technique trial field Jiffy peat pellets In vitro yam plantlet Woman trader displays big yam tubers Yam germplasm collection of Dioscorea bulbifera Yam minisett technology Yam minisett technology Former IITA DG, inspects yam plants Former IITA DG, inspects yam plants Field training and demonstration Field workers evaluating yam field Field worker evaluates yam Yam plants in yam field Yam supported by staking sticks Yam breeding trial Yam alley cropping field Researcher inspects yam Yam alley cropping system Woman selling yam Women selling yam in a market Researcher checks on yams Yam plants in yam field Yam plants in yam field Dry mulches on yam mounds Participants in yam seminar Woman selling yam flour in a market Traders selling yam in a market Traders selling yam in a market Women selling yams Yam market Selling yam in a market Sun-drying yam slices Woman selling dried yam as "elubo isu" Woman selling dried yam as "elubo isu" Selling dried yam as "elubo isu" Traders selling yam in a market Traders selling yam in a market Local yam market Yam and maize market Women selling gari in a market Yam market Traders buying and selling yam Yam market Yam market Yam market Yam trader sources market information on the phone Lorry transports farm produce to the market in Nigeria Girl hawking tubers of yam at Bodija market in Nigeria Teenager carries agricultural produce in a market in Nigeria Village market Researchers visit women in a village market Village market Yam storage barn IITA mandate crops Dioscorea bulbifera Selling yam tubers in Atebubu market Selling yam tubers in a market Selling yam tubers Yam tubers on sale in Ghana Freshly harvested yam tubers on sale in Ghana YIIFSWA field technicians on a market survey in Ghana Harvested new yam tubers on sale Women selling yam tubers in Ghana market Selling yam tubers at Brong Ahafo region, Ghana Research technicians bargain yam tubers in a village market Selling yam tubers at Brong Ahafo region, Ghana Yam tubers on sale at Brong Ahafo region, Ghana Tri-cycle truck for carrying farm produce Yam tubers in a village market in Ghana Women selling yam tubers in a village market Tri-cycle conveys traders and goods from market Yam plants in farmer field Yam field at Idah, Kogi State Yam field at Idah, Kogi State Selling yam tubers at Bodija market, Ibadan Selling yam tubers at Bodija market, Ibadan Selling yam tubers at Bodija market, Ibadan Yam tubers on sale Trader obtains current market prices of yam through the Market Information System Trader obtains current market prices of yam through the Market Information System Load carrier carries yam tubers to motor park Load carrier pushing yam-filled wheel barrow Men pushing yam-filled wheel barrow Woman carrys fresh yam tubers at Bodija market Load carriers carrying yam tubers Buying and selling yam tubers at wholesale prices Selling fresh harvested yam tubers A busy and crowded market in Ibadan Selling dried yam tubers Woman selling dried yam tubers Selling dried yam tubers at wholesale prices Selling dried yam tubers at wholesale prices Dried yam tubers on sale Woman selling dried yam tubers Fresh harvested yam tubers on sale Woman selling dried yam tubers Dried yam tubers for grinding Bags of dried yam tubers on sale Dried yam tubers on sale Bags of dried yam tubers on sale Trader happily displays clean and dried yam tubers Bags of dried yam tubers on sale Heaps of yam tubers on sale Yam tubers on sale at Bodija market Buyer and seller bargaining at Bodija market Dried yam tubers on sale Trader selling yam tubers in a market Woman selling yam tubers at Oje market, Ibadan Yam market at Oje Ibadan Men and women in yam business at Oje market, Ibadan Farmers listen keenly during a training in Kutunku village Staff hold focus group discussion on pests and diseases of yam Farmers in group photo with YIIFSWA Communication Specialist and pathology team Farmers view nematode infestation on yam tubers YIIFSWA Communication Specialist enlightens farmers in Abuja Local yam storage facility in Kutunku village, Abuja IITA staff examines yam condition under local storage Yam tuber with scale insect infestation Staff explains points on nematode-infested yam tubers to farmers Extension agent interpretes presentation on yam diseases in hausa IITA staff train farmers on yam pests and diseases Yam farmers exhibit yam infected with diseases Yam tuber infested by white scale insect Yam tuber infested by dry rot nematode Yam tuber infested by nematode Yam tubers infested by nematode and white scale insect Farmers read through training pamphlets IITA staff and farmers in group photograph at Nasarawa, Nigeria YIIFSWA Communication Specialist from IITA enlightens farmers Farmer displays nematode-infected yam from his farm White scale insects infested yam tuber Heaps of yam tubers on sale in Nasarawa, Nigeria Yam tubers on sale at Nasarawa market Improper storage of yam on ground Field training on yam virus disease indexing at CRI, Kumasi Ghana Field training on yam virus disease indexing at CRI, Kumasi Ghana Screenhouse training on yam virus disease indexing at CRI, Kumasi Ghana Training participants checking yam seedlings at CRI, Kumasi Ghana Screenhouse training on yam virus disease at CRI, Ghana Screenhouse training on yam virus disease indexing at CRI, Kumasi Ghana Training participants pose for group photo at CRI, Ghana Group photo of training participants in yam field at CRI, Ghana TAC members visit IITA-Ibadan Galled tubers with crazy roots Poster on how to produce healthy seed yams Yam seedlings in the screenhouse Technician explains points on yam tissue culture Seed yams from vines ready for planting Yam tissue culture cycles Maroya explains the use of local soil sterilizer in the process Maroya explains points on yam multiplication in the screenhouse Yam seedlings in the screenhouse Research fellow discussing on yam multiplication through vines Yam multiplication Maroya and YIIFSWA project staff in a meeting Maroya and YIIFSWA project staff in a meeting Group photo: Monitoring and Evaluation training Female yam flower