The Cassava Transformation: Africa's Best-Kept Secret

Figures

Figures 1.1 Areas of Cassava Production in Africa .......................... 6 1.2 Location of Survey Sites .................................... 15 3.1 Africa: Indices of Per Capita Production of Cassava and Maize, 1966-96 ....................................... 37 3.2 Ghana: Average Monthly National Retail Price Indices for Gar; and Maize ........................................... 38 4.1 COSCA Countries: Percentage Change in Cassava Area between 1961 and 1999 ···································59 4.2 Nigeria and Ghana: Cassava Land-Area Trends in Villages Having Mechanized Processing Compared with Villages Having No Mechanized Processing ..................................... 59 4.3 Cassava Yield in the Congo, COte d'lvoire, Ghana, Nigeria, Tanzania, and Uganda, 1991 ................................. 61 4.4 Southeast Nigeria: Percentage Changes in Cassava Yield from 1973 to 1993 in Low-, Medium-, and High-Population Density Villages ..... 62 4.5 Annual Cassava Production in Africa, Asia, and South America from 1961 to 1965 and 1995 to 1999 ························64 xi The Cassava Transformation xii 5.1 Nigeria: Cassava Yield by Age for Local and Improved Varieties, 1992 ............................................ 77 B.1 Cassava Plant Density in the Congo, COte d'ivoire, Ghana, Nigeria, Tanzania, and Uganda· ............................... 91 B.2 Percentage of Cassava Fields Using Hired Labor in Six CaSCAStudy Countries ........................................... 94 B.3 Age of Cassava Fields at Harvest in Month after Planting in the Congo, COte d'ivoire, Ghana, Nigeria, Tanzania, and Uganda ........ 97 B.4 Number of Person-Days per Hectare Used in Cassava Harvesting in Six CaSCA-Study Countries .............................. 98 7.1 Nigeria: Location of CaSCA-Study Villages Where Farmers Planted the IITA's High Yielding TMS Varieties in 1989-90 ........ 107 B.1 Traditional Cassava Processing and Food Preparation Methods . . . . . 117 8.1 History of Introduction of Cassava Processing Machines in Villages in the Six CaSCA Countries· ............................... 133 10.1 Percentage of Cassava Fields in which Men, Women, or Men and Women together, Provided the Bulk of Labor for Different Tasks, Average for Six CaSCA-Study Countries . . . . . . . . . . . . . . . . . . . . . . 144 10.2 Percentage of Cassava Tasks Performed by Men in the Congo, COte d'ivoire, Tanzania, and Nigeria· .......................... 147 11.1 Percentage Change in Per Capita Consumption of Cassava in CaSCA Countries for 1961 to 1998 ......................... 155 12.1 Process for Production of Cassava Pellets ..................... ·169 App.1.1 Agroecological Zones of Humid and Subhumid Tropical Africa· ..... 206 ...