Women selling dried fermented cassava chips in a local market Woman selling dried fermented cassava chips in a local farmers' market Women selling garri at Bodija market, Ibadan Woman preparing cassava food Women buying and selling cassava roots in cassava market Woman carrying a bowl of cassava on her head at cassava processing center Onipepeye, Ibadan Women buying cassava from farmers in a local farmers' market Women buying cassava from farmers in a local farmers' market Women buying cassava from farmers in a local farmers' market Woman processing cassava into paste to prepare "fufu" Women discussing on price of cassava at cassava processing center, Ibadan Women processing cassava into fufu at cassava processing center Women buying cassava from farmers at cassava processing center in Ibadan Woman carrying a bowl of cassava on her head Heap of cassava roots for processing Women carrying bowls of cassava on their heads at cassava processing center Woman peeling cassava in preparation for cassava processing Women waiting to buy cassava at Onipepeye Ibadan Woman examining infected cassava root Woman carrying a bowl of cassava on her head at cassava processing center Ibadan Healthy cassava plants Healthy cassava plants Grated and fermented cassava in sacks for making garri Woman sieving fermented cassava to get smooth paste Women buying cassava roots from farmers at Onipepeye Ibadan Woman sieving fermented cassava to get smooth paste Woman sieving fermented cassava to get smooth paste Woman sieving fermented cassava to get smooth paste Women and children at cassava processing center Onipepeye Ibadan Woman preparing cassava food at Onipepeye, Ibadan Cassava-based products on display at IITA IITA scientists with field researchers checking the roots of harvested trial cassava for diseases US Congresswoman visits IITA-Abuja Cassava root rot disease African Root and Tuber Scale on cassava African Root and Tuber Scale on cassava stem ACMV resistance and susceptible cassava varieties Mycelia strand and sclerotia in decaying tuber of cassava Botryodiplodia disease of cassava Botryodiplodia infected cassava root Cassava root rot caused by CBSD Cassava anthracnose disease Severe stem infection by cassava anthracnose Rot-infected cassava root Fusarium stem infection Canker-infected cassava stem Fusarium-infected cassava stem Fusarium-infected cassava stems Wilted cassava plant Corticium rolfsii on infected cassava root Sclerotium rot with mycelia on cassava root GR_ec002 Resistance and susceptible roots of cassava plants Mass rearing of natural enemies of cassava mealybug Predatory mite feeding on cassava green mite Cassava plant infected with cassava mealybug Cassava shoot tip with "bunchy top" Cassava leaves damaged by cassava mealybug Cassava shoot tip with "bunchy top" Mealybug feeding on cassava leaf Farmer in happy mood in his cassava farm Frying gari, a high-value cassava product Dehydrating fermented cassava product Women selling gari, a high-value cassava product in a market Cassava cake Cassava cake Cassava bread Cassava high-value products at IITA Ibadan Yam recipes Cassava-plantain bread Meristem excision under aseptic conditions IITA greenhouse Interior view of one of IITA greenhouses Cassava chips soaked in water Sun drying fermented cassava chips Women operating fabricated sieving machine in a cassava processing center Garri frying in a cassava processing center Women peeling cassava for processing Mechanical grinding of cassava roots and leaves for silage making Scientist observing cassava leaf under electron microscope Men and women at cassava processing center High quality cassava flour Preparing fermented cassava for "fufu" Scientist preparing cassava recipes Cassava recipes Cassava bread Cassava bread Cassava bread Cassava bread Cassava bread Man baking cassava recipes in an oven Staff chiping cassava roots into strips Staff chiping cassava roots into strips Staff chipping cassava roots into strips Combined cassava grater and chipper on display Fabricated cassava graters Cassava hydraulic press Cassava hydraulic press Local garri fryer Cassava mobile grater Garri fryer Cassava pelletizer Cassava screw hydraulic press Women frying garri with stainless fryer Grating cassava into strips Fabricated cassava processing machines Cassava processing unit at IITA Garri producing machine Garri producing center at IITA Ibadan Fabricated cassava processing machines Hope for a brighter future: High quality cassava processing in Bungu Strips: cassava processed recipes IITA technician operating cassava grating machine Gurundi: cassava processed products. Technician operating cassava chiping machine Bemisia whiteflies feeding on the underside of cassava leaves Healthy and Metarhizium anisopliae var. acridum-infested desert locust Cassava leaves with chlorotic (pale) spots Scientist examines cassava leaves for pests Cassava leaves infested with heavy Bemisia tabaci Whitefly pandemic map Red locusts killed by Metarhizium anisopliae Entomologist working in the laboratory at IITA Benin Harvesting cassava leaves in cassava field Hybrid rice plants in IRRI-WARDA nurseries Locust Nomadacris septemfasciata hopper band Paraleyrodes minei, a whitefly species Piles of cassava for sale at cassava processing center Onipepeye, Ibadan Obinna explains how water hyacinth invasion was brought under control using a weevil Parasitic mite Whitefly, Bemisia tabaci Whitefly, Bemisia tabaci Piles of cassava at cassava processing center Tertiary vein chloroses of CBSD IITA staff visit Ogoukpate village Porto Novo, northern Benin Peter Neuenschwander, the father of biocontrol B. tabaci adults feeding on the underside of a young cassava leaf Researcher in cassava field Mixed cropping Women carrying harvested cassava tubers Man operating cassava chipper Insect pests in a tube Technician spraying "cassava tree" infested with mealybugs Biological control of cassava mealybugs Wooden sleeve cages for rearing natural enemies of insect pests Mass rearing of natural enemies of cassava mealybug Locusts in a rearing cage Insect pests and their natural enemies Chart showing natural enemies of insect pests collected from different locations Wooden sleeve cages for rearing natural enemies of cassava pests Rearing of natural enemies Researcher evaluating the establishment and effectiveness of natural enemies to control insect pests Pheromone trap for insect pests Collection/delivery tube containing natural enemies of insect pests Wooden sleeve cages for rearing natural enemies of insect pests Mass rearing of natural enemies of cassava mealybug Aerial releases of beneficial insects to control insect pests in cassava field Evaluation of effectiveness of natural enemies released to control insect pests Evaluation of effectiveness of natural enemies released to control insect pests Researcher releasing natural enemies of insect pests on cassava plants Researcher releasing natural enemies of insect pests on cassava plants Researcher releasing natural enemies of insect pests on cassava plants Collection/delivery tube containing natural enemies of insect pests Wooden sleeve cages for rearing natural enemies of cassava pests "Cassava trees" for rearing natural enemies of insect pests Cassava ministems planted in greenhouse for rearing natural enemies of cassava pests Rearing predatory beetles in a tube Insect pests in powdered form Larvae of stemborer Insect trap on cassava plants Larva of an insect pest Insect trap on cassava plants Parasitic wasp feeding on mango mealybug Substrate for killing insect pests Substrates for killing insect pests Spores of fungus Metarhizium flavoviride solution Pheromone trap for insect pests Researcher inspecting natural enemies of pests in a cage Variegated grasshopper Substrates for growing natural enemies of insect pests Aerial releases of beneficial insects to cassava field Aerial releases of beneficial insects to cassava field Aerial releases of beneficial insects to cassava field Aerial releases of beneficial insects to cassava field Aerial releases of beneficial insects to cassava field Aerial releases of beneficial insects to cassava field Grasshopper killed by fungal disease Metarhizium flavoviride spores on locusts cuticle The desert locust, Schistocerca gregaria The desert locust, Schistocerca gregaria Metarhizium flavoviride spores on locusts cuticle Eroded ridges due to unplanned drain outlets Woman frying gari in a cassava processing center Young ladies frying gari in a village Man operating cassava grater in a village Male farmer holding hoe on his shoulder coming from farm Man loading cassava tubers into a pick-up vehicle Woman frying gari in a local cassava processing center Man operating manual press to dehydrate grated cassava Roasted banana and yam Moulding cassava for sale in Nampula market Vehicle transporting cassava roots from farm Young farmer pose for photograph with his hoe Selling dried cassava and maize in a market Cassava meal called "fufu" Cassava flakes Different varieties of cassava: fresh, cooked and fried products Gari colour from different cassava varieties Harvesting of cassava leaves Different colours of cassava meal prepared from gari Chips served in a plate at the snack bar of I-House in IITA Ibadan Breeder checks on health status of in vitro conserved germplasm Researcher checks on health status of in vitro conserved germplasm Researcher checks on health status of in vitro conserved germplasm Tissue culture-grown cassava at IITA gene bank in Ibadan Technician labelling tissue culture tubes Technician labelling tissue culture tubes Technician labelling tissue culture tubes Forceps and knives on display at IITA gene bank Tissue culture-grown cassava Cassava field demonstration Cassava field demonstration Cassava field demonstration Cassava field demonstration Cassava field demonstration Cassava field demonstration IITA-UPoCA distributes cassava stems to farmers Motorised cassava grating machine Congolese farmers receive IITA improved cassava varieties IITA builds capacities of Cameroonian machine fabricators FMS Non-biodegradable waste collection Day at IITA Ibadan Cassava farmers during a training session on mechanized harvester use Watson Mwale, ZARI Director (second from left), making opening remarks during cassava project launch Participants at an UPoCA training on cassava processing in Tanzania Researcher and technician inspecting root and tuber tissue culture materials Researcher and technician inspecting root and tuber tissue culture materials Manual lake weeder Man operating motorise lake weeders removing weeds from surface of water Man operating motorise lake weeders removing weeds from surface of water Researcher inspecting "cassava tree" in screen house "Cassava trees" for rearing natural enemies of insect pests Typhlodromalus aripo, predator of cassava green mite Aerial releases of beneficial insects to cassava field Beneficial beetles feeding on cassava mealybug eggs Parasitoid wasp feeding on cassava mealybug Parasitic wasp feeding on cassava mealybug Participants in an exhibition with (CEDEP) and USAID in IITA Abuja Participants in an exhibition with (CEDEP) and USAID in IITA Abuja Dixon evaluating hybrid cassava in cassava field Participants during ISTRC field training in Maputo Participants during ISTRC field training in Maputo Ondo ADP Principal Manager, Aladesaye receives Vsat from IITA-CMD Project Participants in a group photograph during SMEDAN and IITA training session Participants in the field in one of the training sessions Bola Arowosafe, IITA staff training women the use of IITA cassava to make cassava products Bola Arowosafe and ADP women in Agric in group photograph with cassava products on display Austrian visits IITA Onne on cassava project Researcher explains points on cassava grating machine Inspection of newly bought vehicles at IITA Onne Cassava processing machines Researcher explains points to visitor during his visit on cassava project Staff pose for photograph with equipment New site under construction New site under construction New site under construction New site under construction New site under construction Researchers discussing on cassava project at Onne Researchers discussing on cassava project at Onne Researcher explains points on fabricated cassava machine Researcher explains points on fabricated cassava machine Fabricated machine for cassava processing Fabricated machine for cassava processing Farmer making ridges with hoe Woman preparing cassava food called 'fufu' Farmer tending cassava plants Cassava processing, a source of employment to Nigerian women Cassava plant Grating cassava for processing Man pressing grated cassava paste for making gari Cassava processing through IITA's Support Innovation processes Cassava processing in a village Scale on cassava Worms feeding on cassava leaf Mealybug feeding on underside of cassava leaf Infested cassava plant Grasshoppers defoliate cassava plants Bug feeding on cassava leaf Cassava chipping machine Cassava cake Cassava cakes Cassava chips Cassava food called eba Cassava processing: source of employment for women Children involvement in cassava processing Boy spreading fermented cassava to sun dry on a platform Cassava processing: source of employment for women Women and children involvement in cassava processing Women and children involvement in cassava processing Women removing soaked cassava from stream for lafun processing Researcher explaining points to farmers Researcher in training session with farmers IITA researchers and farmers in training session IITA researchers and farmers in training session IITA researchers and farmers in training session Cassava flour (lafun) and gari on display in a local market Scientists evaluating cassava in cassava experimental plot Tractor operator making ridges with tractor Man operating cassava grater Mass rearing of natural enemies of cassava mealybug Mass rearing of natural enemies of cassava mealybug Mealybug (white) infested plant Researcher evaluating mango leaves Parasitic Gyranusoidea tebygi lay their eggs in mango mealybug larvae on mango leaf Biological control: using a tiny parasitic wasp to control cassava mealybug Biological control Biological control of cassava mealybug with ladybird beetle Predator of cassava mealybug feeding on mealybug honeydew Biological control: using a tiny parasitic wasp to control cassava mealybug Nymph of insect pest feeding on underside of cowpea leaf Biological control: Telenomus busseolae on Sesamia calamistis eggs Ladybird beetle feeding on cassava mealybug Predatory beetle Selling cassava food products along roadside Cassava processing; one of the major sources of eomployment to both children and women in rural areas Researcher in a mobile laboratory Researchers evaluating infested cassava plants Grasshoppers feeding on cassava leaves The "cassava tree" - inexpensive rearing unit for mealybug parasitoids designed for use by IITA Researcher inspecting cassava plants infested with mealybugs Mass rearing of natural enemies of cassava mealybug Rearing natural enemies of insect pests Beetles feeding on mealybug eggs Cassava storage root deformed by nematodes Researcher evaluating the establishment and effectiveness of natural enemies to control insect pests Researcher collecting mealybug from infested cassava plant Women sieving and frying gari Researcher collecting cassava pests in the field Researcher checks on conserved germplasm Cassava Mosaic Disease and Cassava Brown Streak Disease in Tanzania Harvested cassava in Bungu, Tanzania Cassava bread Cassava bread Cassava bread Cassava bread Researcher checking garri quality Researcher tasting garri Cassava Bread Woman dinning with children Researcher checking garri quality Cassava bread Cassava bread Cassava chips Cassava chips Cassava bread Fried cassava chips Cassava bread Cassava bread Cassava bread Women busy with market activities Gari market Gari and yam market Gari and yam market Gari and yam market Grated and fermented cassava in bags Farmer tending cassava plants Farmer tending cassava plants Researcher with harvested roots of cassava Farmer tending cassava plants Cassava and maize interplanted with Leucaena Farmer removing weeds from farm Cassava alley cropping field Farmer removing weeds from farm Untidy cassava farm interplanted with Leucaena Cassava field training and demonstration Cassava alley cropping field Researchers interacting with a farmer Weeds in cassava field Scanty cassava plants survived in a farm Cassava intercropped  with maize Cassava intercropped with cowpea Cassava intercropped with maize in a field Research publication on cassava High yielding cassava plants Farmer prunning Leucaena hedgerow High yielding cassava roots High yielding cassava roots Harvesting of cassava roots Harvesting cassava roots Cassava roots A bountiful cassava harvest Bountiful cassava harvest Field workers evaluating cassava roots Improved variety of cassava roots Cassava roots Manual cassava harvester Manual cassava harvester Manual cassava harvester Manual cassava harvester Manual cassava harvester Cassava is one of the staple food in West Africa Cassava root yields Cassava root yields Improved cassava varieties Researcher displays improved cassava variety Cassava roots Sun drying cassava peels for feeding animals Selling dry cassava peels for feeding animals Truck loaded with cassava roots Field workers gathering harvested roots Researcher displays cassava varieties Exhibition on cassava products Gari market Cassava varieties with yields Cassava varieties with yields Cassava market Leaves for livestock feeding Leaves for feeding livestock Gari market Selling peeled cassava roots Dry cassava chips in bags Dry cassava chips in bags Dry cassava roots as food Gari market Selling pressed cassava mash (cake) Selling pressed cassava mash (cake) Selling pressed cassava mash (cake) Selling pressed cassava mash (cake) Dry cassava chips in bags Selling cassava chips Cassava chips Gari market The "cassava tree" - inexpensive rearing unit for mealybug parasitoids The "cassava tree" - inexpensive rearing unit for mealybug parasitoids Cassava vegetables Evaluating moisture content with soil moisture meters Trickle irrigation at Umbeluze Evaluating moisture content with soil moisture meters Researcher evaluating cassava plants Training session on mechanized harvester Pot screening of cassava and banana seedlings Participants inspecting rotten cassava roots Participants inspecting infected leaves The "cassava tree" - inexpensive rearing unit for mealybug  parasitoids Cassava field training Researcher meets with village farmers Farmer interacting with extension worker Cassava field training Researchers meet with village farmers Yellow and white cassava roots Dead cassava ministem Dry and infected cassava roots Rotten cassava roots Rotten cassava roots Infected cassava root Infected cassava root Infected cassava roots Infected cassava root. Mildew infection on cassava leaf Infected cassava leaf Cassava mosaic virus Infected cassava root Infested cassava roots ACMV resistance and susceptible cassava varieties Cassava shoot tip showing Typhlodromalus mite Cassava disease symptoms Researcher observing infected cassava leaves Cassava mosaic virus Cassava plants infected by Cassava Mosaic Virus Evaluating infected cassava plants B. tabaci feeding on the underside of cassava leaf Mycelia strand and sclerotia in decaying root Cassava insect pests on display Botryodiplodia disease of cassava Botryodiplodia infected cassava root Botryodiplodia infected cassava root Rotten cassava roots Rotten cassava roots Rotten cassava roots Rot-infected cassava root Fusarium rot-infected cassava roots Fusarium rot-infected root Fusarium stem infection Canker-infected cassava stem Fusarium-infected cassava stem Wilted cassava plant Cassava plant with mushroom Stem infection Stem infection Infected and rotten cassava roots Infected cassava plants Mzuzu farmers display rotten cassava roots Cassava plant damaged by cassava green mite Cassava Mosaic Virus Parasitoid wasp feeding on cassava mealybugs Predatory mite feeding on cassava green mite Resistance and susceptible cassava roots Ladybird beetle feeding on cassava mealybug Researchers evaluating cassava plants