Sweetpotato in Sub-Saharan Africa

  • J. Low
  • J. Lynam
  • B. Lemaga
  • C. Crissman
  • I. Barker
  • G. Thiele
  • S. Namanda
  • C. Wheatley
  • M. Andrade

Botanically sweetpotato is called Ipomoea batatas (L.) Lam and belongs to the morning-glory family (Convolvulaceae) and originated from Latin America. The exact date of arrival of sweetpotato on the continent of Africa is unknown. Evidence indicates that slave traders brought it into the region and since its introduction it has been displacing the true yam in tropical Africa (Davidson, 1999). Given that it has been in the food system for several hundred years, whereas round, Irish, or solanum potato (Solanum tuberosum) was introduced in the late 1800s, sweetpotato is often falsely considered by African farmers to be an indigenous crop and is often referred to as the “local” or “traditional” potato in most Sub-Saharan African countries.


Sweet Potato Napier Grass International Potato Nyanza Province Serum Retinol Concentration 
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  1. Aguayo, V.M. and Baker, S.K. 2005. Vitamin A deficiency and child survival in Sub-Saharan Africa: a reappraisal of challenges and opportunities. Food Nutr. Bull. 26 :348–355.PubMedGoogle Scholar
  2. Bashaasha, B., Ewell,P.T., Mwanga,R.O.M. and Ocitti p’Obwoya, C. 1995. Sweetpotato in the farming and food systems of Uganda: A farm survey report. Lima, Peru: International Potato Center (CIP), National Agricultural Research Organization (NARO). 63p.Google Scholar
  3. Best, R., Westby,A. and Ospina, B. 2006. Linking small-scale cassava and sweetpotato farmers to growth markets, experiences,lessons and challenges. Acta Hortic. 703 :39–46.Google Scholar
  4. Bouis, H. 2002. A new tool for fighting micronutrient malnutrition. J. Nutr. 132 (Symposium: Plant breeding): 491S–494S.PubMedGoogle Scholar
  5. Carey, E.E., Gibson,R.W., Fuentes,S., Machmund,M., Mwanga,R.O.M., Turyamureeba,G., Zhang,L., Ma,D., Abo El-Abbas, F., El-Bedewy,R. and Salazar, L.F. 1999. The causes and control of virus diseases of sweet potato in developing countries: Is sweet potato virus disease the main problem? Pages 241–248 in: Impact on a Changing World: CIP Program Report 1997–1998. Lima, Peru: International Potato Center.Google Scholar
  6. Clark, C.A. and Hoy, M.W. 2006. Effects of common viruses on yield and quality of Beauregard sweet potato in Louisiana. Plant Dis. 90 :83–88.CrossRefGoogle Scholar
  7. Davidson, A. 1999. Oxford Companion to Food. New York: Oxford Uni. Press, 912p.Google Scholar
  8. DeWalt, J. 2007. New Initiative will offer a fresh take on agricultural investment. Food for innovative thought website: OECD Observer Nˆ 261. Accessed May 2007.
  9. Ewell, P. 1990. Sweet potatoes in Eastern and Southern Africa. Paper presented at the Workshop on Sweet Potatoes in the Food Systems of Eastern and Southern Africa. Nairobi, Kenya.Google Scholar
  10. FAOSTAT. 2006. Pig stocks in sub-Saharan African countries in 2005. www. Last accessed 17 July 2006.Google Scholar
  11. FAOSTAT. 2008. Production and area harvested statistics for sweetpotato for 2007.♯ancor. Last accessed 16 October 2008.
  12. Fuglie, K.O. 2006. Priorities for sweetpotato research in developing countries: Results of a survey. Impact Enhancement Division, Lima Peru: International Potato Center, Lima,Peru.Google Scholar
  13. Fuglie K. 2007. Research priority assessment for the CIP 2005–2015 Strategic Plan: Projecting impacts on poverty, employment,health and environment. Lima, Peru: International Potato Center (CIP), Lima,Peru. 105p.Google Scholar
  14. Fuglie, K. and Yanggen, D. 2007. Impact of sweetpotato biofortification on vitamin A deficiency in developing countries: an ex-ante economic assessment. Lima, Peru: International Potato Center (CIP). Unpublished donor report. 34p.Google Scholar
  15. Fuglie, K., Zhang,L., Salazar,L. and Walker, T. 1999. Economic impact of virus-free sweetpotato planting material in Shandong Province, China. Lima, Peru: International Potato Center (CIP). 27p.Google Scholar
  16. Gakonyo, N. 1993. Processed sweet potato: Responding to Kenya’s urban food needs. Master’s thesis. Ithaca, New York: Cornell University,Google Scholar
  17. Gibson, R., Aritua,V., Byamukama,E., Mpembe,I., and Kayongo, J. 2004. Control strategies for sweet potato virus disease in Africa. Virus Res. 100 :115–122.PubMedCrossRefGoogle Scholar
  18. Grüneberg, W.J., Abidin,E., Ndolo,P., Pereira,C.A. and Hermann, M. 2004. Variance component estimations and allocation of resources for breeding sweetpotato under East African conditions. Plant Breed. 123 :311–315.CrossRefGoogle Scholar
  19. Haskell, M.J., Jamil,K.M., Hassan,F., Peerson,J.M., Hossain,M.I., Fuchs,G.J. and Brown, K.H. 2004. Daily consumption of Indian spinach (Basella alba) or sweet potatoes has a positive effect on total body vitamin A stores in Bangadeshi men. Am. J .Clin. Nutr. 80 :705–714.PubMedGoogle Scholar
  20. Hess, S.Y., Thurnham,D.I. and Hurrell, R.F. 2005. Influence of provitamin A carotenoids on iron, zinc,and vitamin A status. Washington D.C., International Food Policy Research Institute (IFPRI) and the International Center for Tropical Agriculture (CIAT).Google Scholar
  21. Institute of Medicine. 2001. Dietary reference intakes for vitamin A, vitamin K, arsenic,boron, chromium,copper, iodine,iron, manganese,molybdenum, nickel,silicon, vanadium,and zinc. Washington D.C.: National Academy Press.Google Scholar
  22. Instituto Nacional de Investigação Agronómica (INIA) and the Southern Africa Root Crops Research Network (SARRNET). 2002. Receitas de Batata Doce. SARRNET: Maputo, Mozambique. 12p.Google Scholar
  23. Instituto Nacional de Investigação Agronómica (INIA) and the Southern Africa Root Crops Research Network (SARRNET). 2003. Cassava and sweetpotato production, processing,and marketing in Mozambique: Report of a survey conducted in June-August 2002. Maputo, Mozambique: Unpublished donor report submitted to USAID Mozambique. 115p.Google Scholar
  24. Jaarsveld, P.v., Faber,M., Tanumihardjo,S.A., Nestel,P., Lombard,C.J. and Benade, A.J. 2005. Beta-carotene-rich orange-fleshed sweet potato improves the vitamin A status of primary school children assessed with the modified-relative-dose-response test. Am. J. Clin. Nutr. 81 :1080–1087.PubMedGoogle Scholar
  25. Jaarsveld, P.v., Marais,D.W., Harmse,E. and Rodriguez-Amaya, D. 2006. Retention of β-carotene in boiled, mashed orange-fleshed sweet potato. J. Food Compost. Anal. 19 :321–329.CrossRefGoogle Scholar
  26. Hall, A., Bockett,G. and Nahdy, S. 1998. Sweetpotato Post harvest Systems in Uganda: Strategies, Constraints,and Potentials. Social Science Department Working Paper No. 1998-7. Lima, Peru: International Potato Center (CIP).Google Scholar
  27. Hall, A. and Devereau, S. 2000. Low-cost storage of fresh sweet potatoes in Uganda: Lessons from participatory and on-station approaches to technology choice and adaptive testing. Agriculture 29 :275–282.Google Scholar
  28. Jayne, T., Villarreal,M., Pingali,P. and Hemrich, G. 2004. Interactions between the agricultural sector and the HIV/AIDS pandemic: Implications for agricultural policy. East Lansing, Michigan,USA: Michigan State University International Development Paper No. 25.
  29. Kapinga, R.E., Ewell,P.T., Jeremiah,S.C. and Kileo, R. 1995. Sweetpotato in Tanzanian farming and food systems: Implications for research. Lima, Peru: International Potato Center and Ministry of Agriculture Tanzania Working Paper. 47p.Google Scholar
  30. Kapinga, R.E,. Rees, D., Westby,A., Ndunguru,G.T., Rwiza,E., Tomlins,K.I., Stathers. T., Jeremiah,S. and Mbilinyi, L.. 2000. Increasing the contribution of sweet potato to sustainable rural livelihoods in Tanzania. Paper presented at the Triennial Symposium of the International Society for Tropical Root Crops, Japan,10–16 September 2000.Google Scholar
  31. Karyeija, R.F., Gibson,R.W. and Valkonen, J.P.T. 1998. The significance of sweetpotato feathery mottle virus in subsistence sweetpotato production in Africa. Plant Dis. 82 :4–15.CrossRefGoogle Scholar
  32. Kapinga, R., Anderson,A., Crissman,C., Zhang,D., Lemaga,B. and Opio, F. 2005. Vitamin A partnership for Africa: A food-based approach to combat Vitamin A deficiency in Sub-Saharan Africa through increased utilization of orange-fleshed sweetpotato. Chron. Horticult. 45 :12–14.Google Scholar
  33. Kemble, J. 2004. Harvesting and Curing Sweetpotatoes. Alabama Cooperative Extension System. No. ANR-1111.Google Scholar
  34. Kennedy, G. 2002. Food Security in the context of urban sub-Saharan Africa Food Africa Internet Forum 31 March-11 April Internet Paper for Food Security Theme.
  35. Kimathi, M., Gero,R., Kirima,F. and Njoroge, S. 2004. Orange-fleshed sweet potato promotion research: Creating a suitable market environment for orange-fleshed sweetpotato and nutrient-rich baby foods. Report submitted to the International Potato Center (CIP) by the Market Access and Enterprise Development Programme of Farm Concern. 37p.Google Scholar
  36. Lagnaoui, F.C., Alcázar, J. and Morales, F. 2000. A sustainable pest management strategy for the sweetpotato weevil in Cuba: A success story. Food and Fertilizer Technology Center, Extension Bulletin 493 :1–7.Google Scholar
  37. Low, J.W. 1995. Determinants of Sweetpotato Commercialization in South Nyanza, Kenya. Paper presented at the Sixth Triennial Symposium of the International Society for Tropical Root Crops – Africa Branch. Lilongwe, Malawi,22–28 October, 1995.Google Scholar
  38. Low, J.W., Arimond,M., Osman,N., Cunguara,B., Zano,F. and Tschirley, D. 2007a. A food-based approach introducing orange-fleshed sweet potatoes increased vitamin A intake and serum retinol concentrations in young children in rural Mozambique. J. Nutr. 137 :1320–1327.PubMedGoogle Scholar
  39. Low, J.W., Arimond,M., Osman,N., Cunguara,B., Zano,F. and Tschirley, D. 2007b. Ensuring supply and creating demand for a biofortified crop with a visible trait: Lessons learned from the introduction of orange-fleshed sweet potato in drought-prone areas of Mozambique. Food Nutr. Bull. 28: S258–S270.PubMedGoogle Scholar
  40. Low, J. and van Jaarsveld, P. 2008. The potential contribution of bread buns fortified with B-carotene-rich sweet potato in Central Mozambique. Food Nutr. Bull. 29 :98–107.PubMedGoogle Scholar
  41. Lykuyu, M., Romney,D., Ouma,R. and Sones, K.. 2007. Feeding Dairy Cattle: A manual for smallholder dairy farmers and extension workers in East Africa. ILRI. Nairobi, Kenya.Google Scholar
  42. McGuire, J. 1993. Addressing Micronutrient Malnutrition. In SCN News No. 9. Geneva: ACC/SCN.Google Scholar
  43. McLaren, D.S. and Frigg, M. 2001. Sight and Life guidebook on vitamin A in health and disease. Basel, Switzerland: Task Force Sight and Life.Google Scholar
  44. Namanda, S. 2007. Understanding Farmer’s Traditional Knowledge in Vine Management in Bukedea and Kamuli Districts. International Potato Center. Unpublished donor report.Google Scholar
  45. Ndunguru, G., Thomson,M., Waida,R., Rwiza,E., and Westby, A. 1998. Methods for examining the relationship between quality characteristics and economic value of marketed fresh sweet potato. Tropical Agriculture (Trinidad) 75 :129–133.Google Scholar
  46. Ndunguru, J. and Kapinga, R. 2007. Viruses and virus-like diseases affecting sweetpotato subsistence farming in southern Tanzania. African Journal of Agricultural Research 2(5): 232–239.Google Scholar
  47. Ndunguru, J., Tumwegamire,S., Kapinga,R., Mwanga,R.O.M., and Sseruwagi, P. 2008. Unusually high populations of aphids associated with sweetpotato virus disease in south-western Uganda. Phytoparasitica In press Google Scholar
  48. Niederwieser, J.G. (ed). 2004. Guide to Sweet Potato Production in South Africa. ARC-Roodeplaat Vegetable and Ornamental Plant Institute. Pretoria, South Africa: CPD Printers. 96p.Google Scholar
  49. Njeru, R.W., Bagabe,M.C., Nsabimana,J., Ndirigue,J., Butare,L. and Kajuga, J. 2006. Farmers’knowledge on the management of sweet potato virus disease in Rwanda. African Regional meeting on Women in Science for Food and Nutritional Security, 3–7 July 2006. Entebbe, Uganda: Africa Conference Proceedings.Google Scholar
  50. Norman, M.J.T., Pearson,C.J. and Searle, P.G.E. 1984. The Ecology of Tropical Food Crops. Cambridge: Cambridge University Press.Google Scholar
  51. Omosa, M. 1997. Current and potential demand for fresh and processed sweetpotato products in Nairobi and Kisumu, Kenya. Lima, Peru: International Potato Center (CIP).Google Scholar
  52. Owori, C. Lemaga, B., Mwanga,R.O.M., Namutebi,A. and Kapinga, R. 2007. Sweetpotato recipe book: Sweetpotato processed products from Eastern and Southern Africa. PRAPACE: Kampala, Uganda. 93p.Google Scholar
  53. Peters, D. 1998. Setting post-harvest strategies for food security and income generation in Soroti, Uganda. Lima, Peru: International Potato Center (CIP). 28p.
  54. Peters, D. 1999. Sweetpotato processing for poverty alleviation and rural stability in China: A case study of Yilong County in Sichuan. Lima, Peru: International Potato Center.
  55. Peters, D. 2008. Assessment of the potential of sweetpotato as livestock feed in East Africa: Rwanda, Uganda,and Kenya. Nairobi, Kenya: Unpublished report submitted to the International Potato Center (CIP), July 2008. 62p.Google Scholar
  56. Peters, D., Nguyen,T. and Pham, N. 2002. Sweet potato root silage for efficient and labour-saving pig raising in Vietnam. AGRIPPA Peer Reviewed Electronic Journal.
  57. Rees, D., Kapinga,R., Rwiza,E., Mohammed,R. and van Oirschot, Q. 1998. The potential for extending the shelf-life of sweetpotato in East Africa through cultivar selection. Trop. Agric. (Trinidad) 75 :208–211.Google Scholar
  58. Rees, D., Oirschot, Q.v. and Kapinga, R (eds). 2003. Sweetpotato Post-harvest Assessment: Experiences from East Africa. Chatham, U.K.: Natural Resources Institute.Google Scholar
  59. Rugalema, G. 1998. Consequences of loss of labour due to HIV/AIDS in smallholder households in a Buhaya village, Bukoba District, Tanzania. Paper presented at the Regional Conference for Eastern and Southern Africa on responding to HIV/AIDS technology development needs of African smallholder agriculture, Harare,June 1998.Google Scholar
  60. Rukumi, T. and Mutungamior, A. 2002. Trends in sweet potato consumption and informal trading in Harare and Chitungwiza. Development Technology Center, University of Zimbabwe. 25p.Google Scholar
  61. Sevastiani, S.K., Mgonja,A., Urio,F., and Ndondi, K. 2005. Response of sweetpotato (Ipomoea batatas) to application of nitrogen and phosphorus fertilizers in the Northern highlands of Tanzania. Proceedings of the 2nd international symposium on sweetpotato and cassava (innovative technologies for commercialization). Kuala Lumpur, Malaysia,June 14–17, 2005. Acta Horticulturae.Google Scholar
  62. Skoglund, L. and Smit, N. 1994. Major diseases and pests of sweetpotato in Eastern Africa. Lima, Peru: International Potato Center. 67p.Google Scholar
  63. Smit, N. 1997. Integrated pest management for sweetpotato in Eastern Africa. Thesis (Ph.D.) Wageningen Agricultural University (WAU), The Netherlands. 151p.Google Scholar
  64. Sommer, A. and West, K. P. 1996. Vitamin A Deficiency: Health, Survival and Vision. New York, Oxford University Press.Google Scholar
  65. Stathers, T.E., Rees,D., Kabi,S., Mbilinyi,L., Smit,N., Kiozya,H., Jeremiah,S., Nyango,A. and Jeffries, D. 2003. Sweetpotato infestation by Cylas spp. in East Africa. 1: Cultivar differences in field infestation and the role of plant factors. Int. J. Pest Manag. 49 :131–140.CrossRefGoogle Scholar
  66. Stathers, T., Namanda,S., Mwanga,R.O.M., Khisa,G. and Kapinga, R. 2005. Manual for sweetpotato integrated production and pest management farmer field schools in sub-Saharan Africa. Kampala, Uganda: International Potato Center. 168p.Google Scholar
  67. Stein, A.J., Meenakshi,J.V., Qaim,M., Nestel,P., Sachdev,H.P.S. and Butta, Z.A. 2005. Analyzing the health benefits of biofortified staple crops by means of the disability-adjusted life-years approach: A handbook focusing on iron, zinc,and vitamin A. Washington D.C. and Cali: International Food Policy Research Institute (IFPRI) and the International Center for Tropical Agriculture (CIAT).Google Scholar
  68. Tewe, O.O., Ojeniyi,F.E. and Abu, O.A. 2003. Sweetpotato production utilization, and marketing in Nigeria. Lima, Peru: International Potato Center (CIP) and the University of Ibadan. 54p.Google Scholar
  69. Tomlins, K.I., Ndunguru,G.T., Rwiza,E. and Westby, A. 2000. Post harvest handling, transport and quality of sweet potato in Tanzania. J. Hortic. Sci. Biotechnol. 75 :586–590.Google Scholar
  70. Tsou, S.C.S. and Yang, M.H. 1984. Flatulence factors in sweet potato. Acta Hortic. 163 :179–186.Google Scholar
  71. UN-Habitat. 2001 The State of the World’s Cities, 2001. United Nations Center for Human Settlements, Nairobi,125p.Google Scholar
  72. Walker, T. and Fuglie, K. 2006. Prospects for enhancing value of crops through public-sector research: Lessons from experiences with roots and tubers. Lima, Peru: International Potato Center (CIP). 20p.Google Scholar
  73. West, K. P. 2002. Extent of vitamin A deficiency among preschool children and women of reproductive age. J. Nutr. 132 :2857S–2866S.PubMedGoogle Scholar
  74. Westby, A., Oirschot,Q.v., Tomlins,K., Ndunguru,G., Ngendello,T., Sanni,L., Pessey,D. and Oyewole, O. 2004. Bridging the gap between post-harvest technology development and commercialization of root and tuber crops in Africa. Invited thematic paper at the ISTRC-Africa Branch Triennial Symposium, 31 October–5 November 2004, Mombasa,Kenya.Google Scholar
  75. Wheatley, C. and Loechl, C. 2008. A Critical Review of Sweetpotato Processing Research Conducted by CIP and Partners in Sub-Saharan Africa. Lima, Peru: International Potato Center (CIP). Social Science Working Paper No. 2008–4.Google Scholar
  76. Wheatley, C., Scott,G., Best,R. and Wiersema, S. 1995. Adding Value to Root and Tuber Crops. Cali, Colombia: International Center for Tropical Agriculture (CIAT).Google Scholar
  77. Woolfe J. 1992. Sweet Potato: An Untapped Resource. Cambridge: Cambridge University Press.Google Scholar
  78. World Sweetpotato Atlas (WSA). 2008. International Potato Center. ( confluence/display/WSA/Home).

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • J. Low
    • 1
  • J. Lynam
    • 2
  • B. Lemaga
    • 1
  • C. Crissman
    • 3
  • I. Barker
    • 4
  • G. Thiele
    • 3
  • S. Namanda
    • 1
  • C. Wheatley
    • 5
  • M. Andrade
    • 1
  1. 1.Intenzational Potato Center-Sub-Saharan AfricaNairobiKenya
  2. 2.Independent Agricultural EconomistNairobiKenya
  3. 3.International Potato CenterPeru
  4. 4.International Potato CenterLimaPeru
  5. 5.Independent Post-harvest SpecialistNew Zealand

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